256625322724 has 27 divisors (see below), whose sum is σ = 451394999433. Its totient is φ = 127658664000.

The previous prime is 256625322697. The next prime is 256625322781. The reversal of 256625322724 is 427223526652.

The square root of 256625322724 is 506582.

It is a perfect power (a square), and thus also a powerful number.

256625322724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 193000305124 + 63625017600 = 439318^2 + 252240^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 244171999 + ... + 244173049.

Almost surely, 2^256625322724 is an apocalyptic number.

256625322724 is the 506582-nd square number.

It is an amenable number.

256625322724 is a deficient number, since it is larger than the sum of its proper divisors (194769676709).

256625322724 is an frugal number, since it uses more digits than its factorization.

256625322724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588 (or 1294 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 46.

The spelling of 256625322724 in words is "two hundred fifty-six billion, six hundred twenty-five million, three hundred twenty-two thousand, seven hundred twenty-four".