255985995 has 8 divisors (see below), whose sum is σ = 409577616. Its totient is φ = 136525856.

The previous prime is 255985967. The next prime is 255985999. The reversal of 255985995 is 599589552.

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 255985995 - 2⁷ = 255985867 is a prime.

It is a super-2 number, since 2×255985995² = 131057659272280050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255985999) 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, 8532852 + ... + 8532881.

It is an arithmetic number, because the mean of its divisors is an integer number (51197202).

Almost surely, 2^255985995 is an apocalyptic number.

255985995 is a deficient number, since it is larger than the sum of its proper divisors (153591621).

255985995 is a wasteful number, since it uses less digits than its factorization.

255985995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17065741.

The product of its digits is 7290000, while the sum is 57.

The square root of 255985995 is about 15999.5623377641. The cubic root of 255985995 is about 634.9488416429.

The spelling of 255985995 in words is "two hundred fifty-five million, nine hundred eighty-five thousand, nine hundred ninety-five".