125905 is an odd 6-digits composite number following 125904
and preceding 125906 . In scientific notation, it is written as 1.25905 × 10^5.
The sum of its digits is 22. It has a total of 4 prime factors and 12 positive divisors.
There are 92352 positive integers (up to 125905) that are relatively prime to 125905.
125905 has 12 divisors, whose sum is 164700
The reverse of 125905 is 509521
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 22
Digital Root 4
Name
one hundred twenty-five thousand nine hundred five
Scientific notation
1.25905 × 10^5
Engineering notation
1.25905 × 10^3
Prime Factorization
5 × 13 × 13 × 149
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
9685
Product of the distinct prime numbers
The prime factorization of 125905 is 5 × 13 × 13 × 149.
Since it has a total of 4 prime factors.
9 , 3 , 6 , 17 , 741 , 666 , 8396 , 9516 , 88776 , 15051 , 807327 , 618401 , 8820002 , 8998102 , 23762132 , 81680734 , 404370504 , 237155157 , 2983538028 , 4019284405
n×2
251810
n×3
377715
n×4
503620
n×5
629525
n÷2
62952.5
n÷3
41968.333333333
n÷3
31476.25
n÷5
25181
n2
15852069025
n3
1995854750592625
n4
2.5128809237336E+20
n5
3.1638427270268E+25
2 √n
354.83094566286
3 √n
50.120376623461
4 √n
18.836956910894
5 √n
10.471492728217
1 , 5 , 13 , 65 , 149 , 169 , 745 , 845 , 1937 , 9685 , 25181 , 125905
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
-125904
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 125905 can be divided by 12 positive divisors.
The sum of these divisors (counting 125905) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
11110101111010001
3
Ternary
20101201011
4
Quaternary
132233101
5
Quinary
13012110
6
Senary
2410521
8
Octal
365721
10
Decimal
125905
12
Duodecimal
60a41
16
Hexadecimal
1ebd1
20
Vigesimal
fef5
36
Base36
2p5d
md5
828e4f01b0148a5048fe639abdb6549b
sha1
684ead7b69de11bcb0bd5e70f35b31596f692da9
sha256
49cefe17224e71f0b3eafa4d958d983ca1bdbe8b04f97adcc7ac18e13e07c7f8
sha512
c24a0e36c17e77f9db0a80d28a0442cfcb70705a90473b8bacd34125b6c11576c2efe0743858236fae504a6267525e0448021ace08839ea5d83f32c849fea439
ripemd-160
e7b00c5a43966c996dd186366f653b4454218352
Diameter
251810
Circumference
791084.44610045
Area
49800743593.138
Volume
8.3602168294588E+15
Surface area
199202974372.55
Circumference
791084.44610045
Perimeter
503620
Area
15852069025
Diagonal
178056.55857058
Surface area
95112414150
Volume
1995854750592625
Space diagonal
218073.85692696
Perimeter
377715
Area
6864147239.0972
Altitude
109036.92846348
Surface area
6864147239.0972
Volume
2.3521373806791E+14
Height
59352.186190195