255630995 has 4 divisors (see below), whose sum is σ = 306757200. Its totient is φ = 204504792.

The previous prime is 255630971. The next prime is 255631007. The reversal of 255630995 is 599036552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255630995 - 2¹⁸ = 255368851 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25563095 + ... + 25563104.

It is an arithmetic number, because the mean of its divisors is an integer number (76689300).

Almost surely, 2^255630995 is an apocalyptic number.

255630995 is a deficient number, since it is larger than the sum of its proper divisors (51126205).

255630995 is an equidigital number, since it uses as much as digits as its factorization.

255630995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51126204.

The product of its (nonzero) digits is 364500, while the sum is 44.

The square root of 255630995 is about 15988.4644353359. The cubic root of 255630995 is about 634.6551913115.

The spelling of 255630995 in words is "two hundred fifty-five million, six hundred thirty thousand, nine hundred ninety-five".