256500535555375 has 64 divisors (see below), whose sum is σ = 356800844574720. Its totient is φ = 182955383769600.

The previous prime is 256500535555361. The next prime is 256500535555417. The reversal of 256500535555375 is 573555535005652.

It is not a de Polignac number, because 256500535555375 - 2⁹ = 256500535554863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 809239174 + ... + 809556076.

It is an arithmetic number, because the mean of its divisors is an integer number (5575013196480).

Almost surely, 2^{256500535555375} is an apocalyptic number.

256500535555375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256500535555375 is a deficient number, since it is larger than the sum of its proper divisors (100300309019345).

256500535555375 is a wasteful number, since it uses less digits than its factorization.

256500535555375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337001 (or 336991 counting only the distinct ones).

The product of its (nonzero) digits is 295312500, while the sum is 61.

The spelling of 256500535555375 in words is "two hundred fifty-six trillion, five hundred billion, five hundred thirty-five million, five hundred fifty-five thousand, three hundred seventy-five".