255577407507 has 12 divisors (see below), whose sum is σ = 377021991840. Its totient is φ = 166759726608.

The previous prime is 255577407493. The next prime is 255577407509. The reversal of 255577407507 is 705704775552.

255577407507 is a `hidden beast` number, since 25 + 5 + 5 + 77 + 40 + 7 + 507 = 666.

It is not a de Polignac number, because 255577407507 - 2⁸ = 255577407251 is a prime.

It is a super-2 number, since 2×255577407507² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255577407509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302100532 + ... + 302101377.

It is an arithmetic number, because the mean of its divisors is an integer number (31418499320).

Almost surely, 2^255577407507 is an apocalyptic number.

255577407507 is a deficient number, since it is larger than the sum of its proper divisors (121444584333).

255577407507 is a wasteful number, since it uses less digits than its factorization.

255577407507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604201962 (or 604201959 counting only the distinct ones).

The product of its (nonzero) digits is 12005000, while the sum is 54.

The spelling of 255577407507 in words is "two hundred fifty-five billion, five hundred seventy-seven million, four hundred seven thousand, five hundred seven".