256255124856 has 16 divisors (see below), whose sum is σ = 640637812200. Its totient is φ = 85418374944.

The previous prime is 256255124843. The next prime is 256255124971. The reversal of 256255124856 is 658421552652.

It is a junction number, because it is equal to n+sod(n) for n = 256255124799 and 256255124808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338648411 + ... + 5338648458.

Almost surely, 2^256255124856 is an apocalyptic number.

It is an amenable number.

256255124856 is an abundant number, since it is smaller than the sum of its proper divisors (384382687344).

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

256255124856 is a wasteful number, since it uses less digits than its factorization.

256255124856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10677296878 (or 10677296874 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 51.

The spelling of 256255124856 in words is "two hundred fifty-six billion, two hundred fifty-five million, one hundred twenty-four thousand, eight hundred fifty-six".