255335665 has 32 divisors (see below), whose sum is σ = 350977536. Its totient is φ = 176655360.

The previous prime is 255335629. The next prime is 255335671. The reversal of 255335665 is 566533552.

It is not a de Polignac number, because 255335665 - 2¹⁹ = 254811377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343284 + ... + 344026.

It is an arithmetic number, because the mean of its divisors is an integer number (10968048).

Almost surely, 2^255335665 is an apocalyptic number.

It is an amenable number.

255335665 is a deficient number, since it is larger than the sum of its proper divisors (95641871).

255335665 is a wasteful number, since it uses less digits than its factorization.

255335665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its digits is 405000, while the sum is 40.

The square root of 255335665 is about 15979.2260450874. The cubic root of 255335665 is about 634.4106918209.

The spelling of 255335665 in words is "two hundred fifty-five million, three hundred thirty-five thousand, six hundred sixty-five".