725688236 has 36 divisors (see below), whose sum is σ = 1590937488. Its totient is φ = 287084448.

The previous prime is 725688211. The next prime is 725688239. The reversal of 725688236 is 632886527.

It is a happy number.

725688236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (725688239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139856 + ... + 144951.

It is an arithmetic number, because the mean of its divisors is an integer number (44192708).

Almost surely, 2^725688236 is an apocalyptic number.

It is an amenable number.

725688236 is an abundant number, since it is smaller than the sum of its proper divisors (865249252).

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

725688236 is a wasteful number, since it uses less digits than its factorization.

725688236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284838 (or 284829 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 725688236 is about 26938.6012257504. The cubic root of 725688236 is about 898.6350651505.

The spelling of 725688236 in words is "seven hundred twenty-five million, six hundred eighty-eight thousand, two hundred thirty-six".