72957725 has 24 divisors (see below), whose sum is σ = 97469952. Its totient is φ = 54014400.

The previous prime is 72957721. The next prime is 72957757. The reversal of 72957725 is 52775927.

It is not a de Polignac number, because 72957725 - 2² = 72957721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72957721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15779 + ... + 19871.

It is an arithmetic number, because the mean of its divisors is an integer number (4061248).

Almost surely, 2^72957725 is an apocalyptic number.

It is an amenable number.

72957725 is a deficient number, since it is larger than the sum of its proper divisors (24512227).

72957725 is a wasteful number, since it uses less digits than its factorization.

72957725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157 (or 4152 counting only the distinct ones).

The product of its digits is 308700, while the sum is 44.

The square root of 72957725 is about 8541.5294297918. The cubic root of 72957725 is about 417.8532275461.

The spelling of 72957725 in words is "seventy-two million, nine hundred fifty-seven thousand, seven hundred twenty-five".