255530505278 has 16 divisors (see below), whose sum is σ = 403593216000. Its totient is φ = 121003566552.

The previous prime is 255530505239. The next prime is 255530505289. The reversal of 255530505278 is 872505035552.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 907838 + ... + 1155521.

It is an arithmetic number, because the mean of its divisors is an integer number (25224576000).

Almost surely, 2^255530505278 is an apocalyptic number.

255530505278 is a deficient number, since it is larger than the sum of its proper divisors (148062710722).

255530505278 is a wasteful number, since it uses less digits than its factorization.

255530505278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066639.

The product of its (nonzero) digits is 2100000, while the sum is 47.

The spelling of 255530505278 in words is "two hundred fifty-five billion, five hundred thirty million, five hundred five thousand, two hundred seventy-eight".