25101981 is an odd 8-digits composite number following 25101980
and preceding 25101982 . In scientific notation, it is written as 2.5101981 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 16343208 positive integers (up to 25101981) that are relatively prime to 25101981.
25101981 has 12 divisors, whose sum is 28860832
The reverse of 25101981 is 18910152
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-five million one hundred one thousand nine hundred eighty-one
Scientific notation
2.5101981 × 10^7
Engineering notation
2.5101981 × 10^6
Prime Factorization
9 × 9 × 43 × 7207
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2789109
Product of the distinct prime numbers
The prime factorization of 25101981 is 9 × 9 × 43 × 7207.
Since it has a total of 4 prime factors.
2 , 8 , 55 , 27 , 2 , 386 , 4500 , 7041 , 51075 , 269 , 797098 , 961797 , 9747728 , 5696505 , 85105816 , 57683774 , 954307865 , 67137012 , 2124736443 , 8355845411
n×2
50203962
n×3
75305943
n×4
100407924
n×5
125509905
n÷2
12550990.5
n÷3
8367327
n÷3
6275495.25
n÷5
5020396.2
n2
630109450124361
n3
1.5816995444942E+22
n4
3.9703791913602E+29
n5
9.966438302432E+36
2 √n
5010.187721034
3 √n
292.79882675558
4 √n
70.782679527085
5 √n
30.19545647027
1 , 9 , 43 , 81 , 387 , 3483 , 7207 , 64863 , 309901 , 583767 , 2789109 , 25101981
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-25101980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 25101981 can be divided by 12 positive divisors.
The sum of these divisors (counting 25101981) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1011111110000011010011101
3
Ternary
1202020022110000
4
Quaternary
1133300122131
5
Quinary
22411230411
6
Senary
2254004513
8
Octal
137603235
10
Decimal
25101981
12
Duodecimal
84a6739
16
Hexadecimal
17f069d
20
Vigesimal
7ghej1
36
Base36
ey0t9
md5
d341f91b579d59b3889146aa0cf5a21c
sha1
31676b41e66469303fd20ffb1a47b3564ac6795e
sha256
6122deb1bc4cc668ffe2b955dc9ba62c9614d8e2c158f08f6817ebc6f8e32dca
sha512
4fa60912bad3e20e76c2ca45465589b7d90654de7751f6e925b0da3a5b7f5f1b31572a38656bdba2ef87d83ffbec6b02cbe66ddc8c95772142bee209b296b617
ripemd-160
72cadff64285f436159a10c8b145e9f99d0b8ab5
Diameter
50203962
Circumference
157720398.2003
Area
1.9795472194682E+15
Volume
6.6254075588925E+22
Surface area
7.9181888778728E+15
Circumference
157720398.2003
Perimeter
100407924
Area
630109450124361
Diagonal
35499561.972632
Surface area
3780656700746166
Volume
1.5816995444942E+22
Space diagonal
43477906.462629
Perimeter
75305943
Area
2.7284539548617E+14
Altitude
21738953.231314
Surface area
2.7284539548617E+14
Volume
1.8640507895192E+21
Height
11833187.324211