255715 has 8 divisors (see below), whose sum is σ = 309600. Its totient is φ = 202752.

The previous prime is 255713. The next prime is 255733. The reversal of 255715 is 517552.

It is a happy number.

255715 is nontrivially palindromic in base 16.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255715 - 2¹ = 255713 is a prime.

It is a super-2 number, since 2×255715² = 130780322450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255715.

It is not an unprimeable number, because it can be changed into a prime (255713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (38700).

2²⁵⁵⁷¹⁵ is an apocalyptic number.

255715 is a deficient number, since it is larger than the sum of its proper divisors (53885).

255715 is a wasteful number, since it uses less digits than its factorization.

255715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461.

The product of its digits is 1750, while the sum is 25.

The square root of 255715 is about 505.6827068429. The cubic root of 255715 is about 63.4724703449.

The spelling of 255715 in words is "two hundred fifty-five thousand, seven hundred fifteen".