255213155555 has 16 divisors (see below), whose sum is σ = 322437261600. Its totient is φ = 193387057920.

The previous prime is 255213155543. The next prime is 255213155563. The reversal of 255213155555 is 555551312552.

It is not a de Polignac number, because 255213155555 - 2⁴ = 255213155539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234095 + ... + 751815.

It is an arithmetic number, because the mean of its divisors is an integer number (20152328850).

Almost surely, 2^255213155555 is an apocalyptic number.

255213155555 is a deficient number, since it is larger than the sum of its proper divisors (67224106045).

255213155555 is a wasteful number, since it uses less digits than its factorization.

255213155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522934.

The product of its digits is 937500, while the sum is 44.

The spelling of 255213155555 in words is "two hundred fifty-five billion, two hundred thirteen million, one hundred fifty-five thousand, five hundred fifty-five".