256525312513370 has 16 divisors (see below), whose sum is σ = 461749131641448. Its totient is φ = 102609331868160.

The previous prime is 256525312513361. The next prime is 256525312513409. The reversal of 256525312513370 is 73315213525652.

It is a happy number.

256525312513370 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 4 ways, for example, as 230296134111121 + 26229178402249 = 15175511^2 + 5121443^2 .

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, 97782851 + ... + 100371990.

Almost surely, 2^{256525312513370} is an apocalyptic number.

256525312513370 is a deficient number, since it is larger than the sum of its proper divisors (205223819128078).

256525312513370 is a wasteful number, since it uses less digits than its factorization.

256525312513370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198284305.

The product of its (nonzero) digits is 5670000, while the sum is 50.

The spelling of 256525312513370 in words is "two hundred fifty-six trillion, five hundred twenty-five billion, three hundred twelve million, five hundred thirteen thousand, three hundred seventy".