255392665 has 16 divisors (see below), whose sum is σ = 339817536. Its totient is φ = 182692800.

The previous prime is 255392639. The next prime is 255392671. The reversal of 255392665 is 566293552.

It is not a de Polignac number, because 255392665 - 2⁵ = 255392633 is a prime.

It is a Duffinian 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, 34707 + ... + 41416.

It is an arithmetic number, because the mean of its divisors is an integer number (21238596).

Almost surely, 2^255392665 is an apocalyptic number.

It is an amenable number.

255392665 is a deficient number, since it is larger than the sum of its proper divisors (84424871).

255392665 is a wasteful number, since it uses less digits than its factorization.

255392665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76200.

The product of its digits is 486000, while the sum is 43.

The square root of 255392665 is about 15981.0095112918. The cubic root of 255392665 is about 634.4578959837.

The spelling of 255392665 in words is "two hundred fifty-five million, three hundred ninety-two thousand, six hundred sixty-five".