255860685 has 24 divisors (see below), whose sum is σ = 446887584. Its totient is φ = 135414240.

The previous prime is 255860663. The next prime is 255860687. The reversal of 255860685 is 586068552.

255860685 is a `hidden beast` number, since 2 + 5 + 586 + 0 + 68 + 5 = 666.

It is not a de Polignac number, because 255860685 - 2⁵ = 255860653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 255860685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255860687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15807 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (18620316).

Almost surely, 2^255860685 is an apocalyptic number.

It is an amenable number.

255860685 is a deficient number, since it is larger than the sum of its proper divisors (191026899).

255860685 is a wasteful number, since it uses less digits than its factorization.

255860685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43545 (or 43542 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 255860685 is about 15995.6458137832. The cubic root of 255860685 is about 634.8452182321.

The spelling of 255860685 in words is "two hundred fifty-five million, eight hundred sixty thousand, six hundred eighty-five".