125165131 has 32 divisors (see below), whose sum is σ = 163215360. Its totient is φ = 93308544.

The previous prime is 125165123. The next prime is 125165167. The reversal of 125165131 is 131561521.

It is a happy number.

It is not a de Polignac number, because 125165131 - 2³ = 125165123 is a prime.

It is a super-2 number, since 2×125165131² = 31332620036494322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125165096 and 125165105.

It is not an unprimeable number, because it can be changed into a prime (125165111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112926 + ... + 114028.

It is an arithmetic number, because the mean of its divisors is an integer number (5100480).

Almost surely, 2^125165131 is an apocalyptic number.

125165131 is a deficient number, since it is larger than the sum of its proper divisors (38050229).

125165131 is a wasteful number, since it uses less digits than its factorization.

125165131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195.

The product of its digits is 900, while the sum is 25.

The square root of 125165131 is about 11187.7223329863. The cubic root of 125165131 is about 500.2200777840.

The spelling of 125165131 in words is "one hundred twenty-five million, one hundred sixty-five thousand, one hundred thirty-one".