255402637775 has 24 divisors (see below), whose sum is σ = 335393828064. Its totient is φ = 192265779200.

The previous prime is 255402637769. The next prime is 255402637807. The reversal of 255402637775 is 577736204552.

It is a happy number.

It is not a de Polignac number, because 255402637775 - 2¹² = 255402633679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2236310 + ... + 2347740.

It is an arithmetic number, because the mean of its divisors is an integer number (13974742836).

Almost surely, 2^255402637775 is an apocalyptic number.

255402637775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255402637775 is a deficient number, since it is larger than the sum of its proper divisors (79991190289).

255402637775 is a wasteful number, since it uses less digits than its factorization.

255402637775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116851 (or 116846 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 53.

The spelling of 255402637775 in words is "two hundred fifty-five billion, four hundred two million, six hundred thirty-seven thousand, seven hundred seventy-five".