255205251 has 48 divisors (see below), whose sum is σ = 429345280. Its totient is φ = 143078400.

The previous prime is 255205201. The next prime is 255205277. The reversal of 255205251 is 152502552.

It is not a de Polignac number, because 255205251 - 2⁹ = 255204739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255205201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1322211 + ... + 1322403.

Almost surely, 2^255205251 is an apocalyptic number.

255205251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255205251 is a deficient number, since it is larger than the sum of its proper divisors (174140029).

255205251 is a wasteful number, since it uses less digits than its factorization.

255205251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 255205251 is about 15975.1447880763. The cubic root of 255205251 is about 634.3026639223.

The spelling of 255205251 in words is "two hundred fifty-five million, two hundred five thousand, two hundred fifty-one".