725456256 has 64 divisors (see below), whose sum is σ = 2202286080. Its totient is φ = 207272448.

The previous prime is 725456231. The next prime is 725456269. The reversal of 725456256 is 652654527.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132256 + ... + 137631.

It is an arithmetic number, because the mean of its divisors is an integer number (34410720).

Almost surely, 2^725456256 is an apocalyptic number.

It is an amenable number.

725456256 is an abundant number, since it is smaller than the sum of its proper divisors (1476829824).

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

725456256 is a wasteful number, since it uses less digits than its factorization.

725456256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269911 (or 269899 counting only the distinct ones).

The product of its digits is 504000, while the sum is 42.

The square root of 725456256 is about 26934.2951643439. The cubic root of 725456256 is about 898.5392997013.

The spelling of 725456256 in words is "seven hundred twenty-five million, four hundred fifty-six thousand, two hundred fifty-six".