255885291635 has 4 divisors (see below), whose sum is σ = 307062349968. Its totient is φ = 204708233304.

The previous prime is 255885291631. The next prime is 255885291637. The reversal of 255885291635 is 536192588552.

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 255885291635 - 2² = 255885291631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255885291631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25588529159 + ... + 25588529168.

It is an arithmetic number, because the mean of its divisors is an integer number (76765587492).

Almost surely, 2^255885291635 is an apocalyptic number.

255885291635 is a deficient number, since it is larger than the sum of its proper divisors (51177058333).

255885291635 is an equidigital number, since it uses as much as digits as its factorization.

255885291635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51177058332.

The product of its digits is 25920000, while the sum is 59.

The spelling of 255885291635 in words is "two hundred fifty-five billion, eight hundred eighty-five million, two hundred ninety-one thousand, six hundred thirty-five".