725691232 has 24 divisors (see below), whose sum is σ = 1632805776. Its totient is φ = 311010432.

The previous prime is 725691229. The next prime is 725691251. The reversal of 725691232 is 232196527.

It is a junction number, because it is equal to n+sod(n) for n = 725691191 and 725691200.

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, 1619623 + ... + 1620070.

It is an arithmetic number, because the mean of its divisors is an integer number (68033574).

Almost surely, 2^725691232 is an apocalyptic number.

It is an amenable number.

725691232 is an abundant number, since it is smaller than the sum of its proper divisors (907114544).

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

725691232 is a wasteful number, since it uses less digits than its factorization.

725691232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239710 (or 3239702 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 725691232 is about 26938.6568336285. The cubic root of 725691232 is about 898.6363018188.

The spelling of 725691232 in words is "seven hundred twenty-five million, six hundred ninety-one thousand, two hundred thirty-two".