725725310164 has 48 divisors (see below), whose sum is σ = 1373225936320. Its totient is φ = 334417144320.

The previous prime is 725725310137. The next prime is 725725310171. The reversal of 725725310164 is 461013527527.

It is a happy number.

725725310164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 725725310164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19825999 + ... + 19862569.

Almost surely, 2^725725310164 is an apocalyptic number.

725725310164 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

725725310164 is a deficient number, since it is larger than the sum of its proper divisors (647500626156).

725725310164 is a wasteful number, since it uses less digits than its factorization.

725725310164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43688 (or 43686 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 725725310164 in words is "seven hundred twenty-five billion, seven hundred twenty-five million, three hundred ten thousand, one hundred sixty-four".