255216555552 has 48 divisors (see below), whose sum is σ = 765649668672. Its totient is φ = 72919015680.

The previous prime is 255216555551. The next prime is 255216555593. The reversal of 255216555552 is 255555612552.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (255216555551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189892599 + ... + 189893942.

It is an arithmetic number, because the mean of its divisors is an integer number (15951034764).

Almost surely, 2^255216555552 is an apocalyptic number.

It is an amenable number.

255216555552 is an abundant number, since it is smaller than the sum of its proper divisors (510433113120).

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

255216555552 is a wasteful number, since it uses less digits than its factorization.

255216555552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379786561 (or 379786553 counting only the distinct ones).

The product of its digits is 3750000, while the sum is 48.

The spelling of 255216555552 in words is "two hundred fifty-five billion, two hundred sixteen million, five hundred fifty-five thousand, five hundred fifty-two".