255635315225 has 24 divisors (see below), whose sum is σ = 336975098880. Its totient is φ = 191826360000.

The previous prime is 255635315213. The next prime is 255635315281. The reversal of 255635315225 is 522513536552.

It is a happy number.

It is not a de Polignac number, because 255635315225 - 2¹⁸ = 255635053081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2616281 + ... + 2712230.

It is an arithmetic number, because the mean of its divisors is an integer number (14040629120).

Almost surely, 2^255635315225 is an apocalyptic number.

255635315225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255635315225 is a deficient number, since it is larger than the sum of its proper divisors (81339783655).

255635315225 is a wasteful number, since it uses less digits than its factorization.

255635315225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328641 (or 5328636 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 44.

The spelling of 255635315225 in words is "two hundred fifty-five billion, six hundred thirty-five million, three hundred fifteen thousand, two hundred twenty-five".