125631957 has 16 divisors (see below), whose sum is σ = 190683648. Its totient is φ = 72829680.

The previous prime is 125631859. The next prime is 125631959. The reversal of 125631957 is 759136521.

It is not a de Polignac number, because 125631957 - 2¹⁰ = 125630933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125631959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82003 + ... + 83520.

It is an arithmetic number, because the mean of its divisors is an integer number (11917728).

Almost surely, 2^125631957 is an apocalyptic number.

It is an amenable number.

125631957 is a deficient number, since it is larger than the sum of its proper divisors (65051691).

125631957 is a wasteful number, since it uses less digits than its factorization.

125631957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165560.

The product of its digits is 56700, while the sum is 39.

The square root of 125631957 is about 11208.5662330202. The cubic root of 125631957 is about 500.8411933273.

The spelling of 125631957 in words is "one hundred twenty-five million, six hundred thirty-one thousand, nine hundred fifty-seven".