725604172 has 12 divisors (see below), whose sum is σ = 1271291560. Its totient is φ = 362378016.

The previous prime is 725604127. The next prime is 725604181. The reversal of 725604172 is 271406527.

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, 102153 + ... + 109024.

Almost surely, 2^725604172 is an apocalyptic number.

It is an amenable number.

725604172 is a deficient number, since it is larger than the sum of its proper divisors (545687388).

725604172 is a wasteful number, since it uses less digits than its factorization.

725604172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212040 (or 212038 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 725604172 is about 26937.0408916792. The cubic root of 725604172 is about 898.6003644018.

The spelling of 725604172 in words is "seven hundred twenty-five million, six hundred four thousand, one hundred seventy-two".