255167688205 has 4 divisors (see below), whose sum is σ = 306201225852. Its totient is φ = 204134150560.

The previous prime is 255167688163. The next prime is 255167688227. The reversal of 255167688205 is 502886761552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81381255076 + 173786433129 = 285274^2 + 416877^2 .

It is not a de Polignac number, because 255167688205 - 2⁷ = 255167688077 is a prime.

It is a super-2 number, since 2×255167688205² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

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, 25516768816 + ... + 25516768825.

It is an arithmetic number, because the mean of its divisors is an integer number (76550306463).

Almost surely, 2^255167688205 is an apocalyptic number.

It is an amenable number.

255167688205 is a deficient number, since it is larger than the sum of its proper divisors (51033537647).

255167688205 is an equidigital number, since it uses as much as digits as its factorization.

255167688205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51033537646.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 255167688205 in words is "two hundred fifty-five billion, one hundred sixty-seven million, six hundred eighty-eight thousand, two hundred five".