128225 is an odd 6-digits composite number following 128224
and preceding 128226 . In scientific notation, it is written as 1.28225 × 10^5.
The sum of its digits is 20. It has a total of 4 prime factors and 12 positive divisors.
There are 97680 positive integers (up to 128225) that are relatively prime to 128225.
128225 has 12 divisors, whose sum is 166656
The reverse of 128225 is 522821
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 20
Digital Root 2
Name
one hundred twenty-eight thousand two hundred twenty-five
Scientific notation
1.28225 × 10^5
Engineering notation
1.28225 × 10^3
Prime Factorization
5 × 5 × 23 × 223
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
25645
Product of the distinct prime numbers
The prime factorization of 128225 is 5 × 5 × 23 × 223.
Since it has a total of 4 prime factors.
7 , 6 , 85 , 46 , 123 , 778 , 3731 , 4938 , 50435 , 62335 , 926626 , 282139 , 7551791 , 1787704 , 20991102 , 87071275 , 615862821 , 839095164 , 5088968534 , 3986424761
n×2
256450
n×3
384675
n×4
512900
n×5
641125
n÷2
64112.5
n÷3
42741.666666667
n÷3
32056.25
n÷5
25645
n2
16441650625
n3
2108230651390625
n4
2.7032787527456E+20
n5
3.4662791807081E+25
2 √n
358.08518539588
3 √n
50.426354109896
4 √n
18.923138888564
5 √n
10.509802178045
1 , 5 , 23 , 25 , 115 , 223 , 575 , 1115 , 5129 , 5575 , 25645 , 128225
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
-128224
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 128225 can be divided by 12 positive divisors.
The sum of these divisors (counting 128225) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
11111010011100001
3
Ternary
20111220002
4
Quaternary
133103201
5
Quinary
13100400
6
Senary
2425345
8
Octal
372341
10
Decimal
128225
12
Duodecimal
62255
16
Hexadecimal
1f4e1
20
Vigesimal
g0b5
36
Base36
2qxt
md5
ce1147ec605e5fbac6b692e762db8881
sha1
dd4fe5ac5a85d9da9afecaabe77858b6c760d7eb
sha256
cf08aa850169d0bc7e986e10755d1e499b55a782fbd66cd5d786ac7f9b398045
sha512
e927a2683660f92d46cca22e95936d9b0490c35e1100aca10a03dcc40fa1b03b4f016d6ea7c9963bc702e13ca124f0368060f2862ee8e932452a0ad632c700fe
ripemd-160
21573f0f520f72c3be8a983118abee8412955fa1
Diameter
256450
Circumference
805661.4360131
Area
51652968816.39
Volume
8.8309359019755E+15
Surface area
206611875265.56
Circumference
805661.4360131
Perimeter
512900
Area
16441650625
Diagonal
181337.53403529
Surface area
98649903750
Volume
2108230651390625
Space diagonal
222092.21480052
Perimeter
384675
Area
7119443560.6991
Altitude
111046.10740026
Surface area
7119443560.6991
Volume
2.4845736498394E+14
Height
60445.84467843