725507256 has 32 divisors (see below), whose sum is σ = 1814457600. Its totient is φ = 241743840.

The previous prime is 725507243. The next prime is 725507261. The reversal of 725507256 is 652705527.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94191 + ... + 101601.

It is an arithmetic number, because the mean of its divisors is an integer number (56701800).

Almost surely, 2^725507256 is an apocalyptic number.

It is an amenable number.

725507256 is an abundant number, since it is smaller than the sum of its proper divisors (1088950344).

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

725507256 is a wasteful number, since it uses less digits than its factorization.

725507256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499 (or 11495 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 725507256 is about 26935.2418960736. The cubic root of 725507256 is about 898.5603551544.

The spelling of 725507256 in words is "seven hundred twenty-five million, five hundred seven thousand, two hundred fifty-six".