725205656 has 16 divisors (see below), whose sum is σ = 1554012240. Its totient is φ = 310802400.

The previous prime is 725205647. The next prime is 725205721. The reversal of 725205656 is 656502527.

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, 6474995 + ... + 6475106.

It is an arithmetic number, because the mean of its divisors is an integer number (97125765).

Almost surely, 2^725205656 is an apocalyptic number.

It is an amenable number.

725205656 is an abundant number, since it is smaller than the sum of its proper divisors (828806584).

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

725205656 is a wasteful number, since it uses less digits than its factorization.

725205656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950114 (or 12950110 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 725205656 is about 26929.6427009346. The cubic root of 725205656 is about 898.4358246447.

The spelling of 725205656 in words is "seven hundred twenty-five million, two hundred five thousand, six hundred fifty-six".