255657688225 has 12 divisors (see below), whose sum is σ = 318960419056. Its totient is φ = 203271385680.

The previous prime is 255657688189. The next prime is 255657688243. The reversal of 255657688225 is 522886756552.

255657688225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255657688225 - 2¹¹ = 255657686177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31364967 + ... + 31373116.

Almost surely, 2^255657688225 is an apocalyptic number.

255657688225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255657688225 is a deficient number, since it is larger than the sum of its proper divisors (63302730831).

255657688225 is a wasteful number, since it uses less digits than its factorization.

255657688225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62738256 (or 62738251 counting only the distinct ones).

The product of its digits is 80640000, while the sum is 61.

The spelling of 255657688225 in words is "two hundred fifty-five billion, six hundred fifty-seven million, six hundred eighty-eight thousand, two hundred twenty-five".