125664724 has 12 divisors (see below), whose sum is σ = 221030964. Its totient is φ = 62513024.

The previous prime is 125664677. The next prime is 125664751. The reversal of 125664724 is 427466521.

It can be written as a sum of positive squares in 2 ways, for example, as 68359824 + 57304900 = 8268^2 + 7570^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78949 + ... + 80524.

It is an arithmetic number, because the mean of its divisors is an integer number (18419247).

Almost surely, 2^125664724 is an apocalyptic number.

It is an amenable number.

125664724 is a deficient number, since it is larger than the sum of its proper divisors (95366240).

125664724 is a wasteful number, since it uses less digits than its factorization.

125664724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159674 (or 159672 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 125664724 is about 11210.0278322580. The cubic root of 125664724 is about 500.8847322410.

The spelling of 125664724 in words is "one hundred twenty-five million, six hundred sixty-four thousand, seven hundred twenty-four".