255257855 has 16 divisors (see below), whose sum is σ = 322077600. Its totient is φ = 193925760.

The previous prime is 255257843. The next prime is 255257903. The reversal of 255257855 is 558752552.

It is not a de Polignac number, because 255257855 - 2⁸ = 255257599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5585 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (20129850).

Almost surely, 2^255257855 is an apocalyptic number.

255257855 is a deficient number, since it is larger than the sum of its proper divisors (66819745).

255257855 is a wasteful number, since it uses less digits than its factorization.

255257855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28954.

The product of its digits is 700000, while the sum is 44.

The square root of 255257855 is about 15976.7911358946. The cubic root of 255257855 is about 634.3462426561.

The spelling of 255257855 in words is "two hundred fifty-five million, two hundred fifty-seven thousand, eight hundred fifty-five".