725872 has 20 divisors (see below), whose sum is σ = 1607536. Its totient is φ = 311040.

The previous prime is 725867. The next prime is 725891. The reversal of 725872 is 278527.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

725872 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3129 + ... + 3352.

2⁷²⁵⁸⁷² is an apocalyptic number.

It is an amenable number.

725872 is an abundant number, since it is smaller than the sum of its proper divisors (881664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725872 is a wasteful number, since it uses less digits than its factorization.

725872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6496 (or 6490 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 725872 is about 851.9812204503. The cubic root of 725872 is about 89.8710911696.

The spelling of 725872 in words is "seven hundred twenty-five thousand, eight hundred seventy-two".