255513305125 has 64 divisors (see below), whose sum is σ = 356817988800. Its totient is φ = 181377100800.

The previous prime is 255513305119. The next prime is 255513305213. The reversal of 255513305125 is 521503315552.

It can be written as a sum of positive squares in 32 ways, for example, as 244793394756 + 10719910369 = 494766^2 + 103537^2 .

It is not a de Polignac number, because 255513305125 - 2²³ = 255504916517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10779787 + ... + 10803463.

It is an arithmetic number, because the mean of its divisors is an integer number (5575281075).

Almost surely, 2^255513305125 is an apocalyptic number.

255513305125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255513305125 is a deficient number, since it is larger than the sum of its proper divisors (101304683675).

255513305125 is a wasteful number, since it uses less digits than its factorization.

255513305125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23963 (or 23953 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 255513305125 in words is "two hundred fifty-five billion, five hundred thirteen million, three hundred five thousand, one hundred twenty-five".