255540775 has 12 divisors (see below), whose sum is σ = 362138032. Its totient is φ = 175227840.

The previous prime is 255540749. The next prime is 255540827. The reversal of 255540775 is 577045552.

It is not a de Polignac number, because 255540775 - 2⁵ = 255540743 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 11 ways as a sum of consecutive naturals, for example, 729942 + ... + 730291.

Almost surely, 2^255540775 is an apocalyptic number.

255540775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255540775 is a deficient number, since it is larger than the sum of its proper divisors (106597257).

255540775 is a wasteful number, since it uses less digits than its factorization.

255540775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460250 (or 1460245 counting only the distinct ones).

The product of its (nonzero) digits is 245000, while the sum is 40.

The square root of 255540775 is about 15985.6427771923. The cubic root of 255540775 is about 634.5805194474.

The spelling of 255540775 in words is "two hundred fifty-five million, five hundred forty thousand, seven hundred seventy-five".