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125153231 = 731576743
BaseRepresentation
bin1110111010110…
…10111111001111
322201111102221212
413131122333033
5224014400411
620230245035
73046533140
oct735327717
9281442855
10125153231
1164711525
1235ab677b
131cc0c688
141289bac7
15aec268b
hex775afcf

125153231 has 8 divisors (see below), whose sum is σ = 147646464. Its totient is φ = 103813560.

The previous prime is 125153227. The next prime is 125153233. The reversal of 125153231 is 132351521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125153231 - 22 = 125153227 is a prime.

It is a super-2 number, since 2×1251532312 = 31326662459478722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125153197 and 125153206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125153233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288155 + ... + 288588.

It is an arithmetic number, because the mean of its divisors is an integer number (18455808).

Almost surely, 2125153231 is an apocalyptic number.

125153231 is a deficient number, since it is larger than the sum of its proper divisors (22493233).

125153231 is an equidigital number, since it uses as much as digits as its factorization.

125153231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576781.

The product of its digits is 900, while the sum is 23.

The square root of 125153231 is about 11187.1904873386. The cubic root of 125153231 is about 500.2042245733.

The spelling of 125153231 in words is "one hundred twenty-five million, one hundred fifty-three thousand, two hundred thirty-one".

Divisors: 1 7 31 217 576743 4037201 17879033 125153231