255560256 has 168 divisors, whose sum is σ = 843832704. Its totient is φ = 72437760.

The previous prime is 255560233. The next prime is 255560273. The reversal of 255560256 is 652065552.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×255560256² = 130622088893571072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 255560256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 971581 + ... + 971843.

Almost surely, 2^255560256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255560256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421916352).

255560256 is an abundant number, since it is smaller than the sum of its proper divisors (588272448).

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

255560256 is a wasteful number, since it uses less digits than its factorization.

255560256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 255560256 is about 15986.2520935959. The cubic root of 255560256 is about 634.5966446613.

The spelling of 255560256 in words is "two hundred fifty-five million, five hundred sixty thousand, two hundred fifty-six".