725404 has 12 divisors (see below), whose sum is σ = 1278928. Its totient is φ = 360000.

The previous prime is 725399. The next prime is 725423. The reversal of 725404 is 404527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 1204.

2⁷²⁵⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

725404 is a deficient number, since it is larger than the sum of its proper divisors (553524).

725404 is a wasteful number, since it uses less digits than its factorization.

725404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 725404 is about 851.7065222246. The cubic root of 725404 is about 89.8517724682.

It can be divided in two parts, 72 and 5404, that added together give a square (5476 = 74²).

The spelling of 725404 in words is "seven hundred twenty-five thousand, four hundred four".