255404252550 has 48 divisors (see below), whose sum is σ = 633669902352. Its totient is φ = 68079052800.

The previous prime is 255404252549. The next prime is 255404252557. The reversal of 255404252550 is 55252404552.

It is a junction number, because it is equal to n+sod(n) for n = 255404252499 and 255404252508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255404252557) 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 23 ways as a sum of consecutive naturals, for example, 1611 + ... + 714710.

It is an arithmetic number, because the mean of its divisors is an integer number (13201456299).

Almost surely, 2^255404252550 is an apocalyptic number.

255404252550 is an abundant number, since it is smaller than the sum of its proper divisors (378265649802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255404252550 is a wasteful number, since it uses less digits than its factorization.

255404252550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718713 (or 718708 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 255404252550 in words is "two hundred fifty-five billion, four hundred four million, two hundred fifty-two thousand, five hundred fifty".