725864 has 16 divisors (see below), whose sum is σ = 1394820. Its totient is φ = 353920.

The previous prime is 725863. The next prime is 725867. The reversal of 725864 is 468527.

It can be written as a sum of positive squares in 2 ways, for example, as 722500 + 3364 = 850^2 + 58^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 725864.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725864.

It is not an unprimeable number, because it can be changed into a prime (725861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779 + ... + 1434.

2⁷²⁵⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

725864 is a deficient number, since it is larger than the sum of its proper divisors (668956).

725864 is a wasteful number, since it uses less digits than its factorization.

725864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 2256 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 725864 is about 851.9765254982. The cubic root of 725864 is about 89.8707610051.

The spelling of 725864 in words is "seven hundred twenty-five thousand, eight hundred sixty-four".