255550505500 has 48 divisors (see below), whose sum is σ = 567582069600. Its totient is φ = 100487644800.

The previous prime is 255550505471. The next prime is 255550505501. The reversal of 255550505500 is 5505055552.

It is a super-2 number, since 2×255550505500² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255550505500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255550505501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4301865 + ... + 4360864.

It is an arithmetic number, because the mean of its divisors is an integer number (11824626450).

Almost surely, 2^255550505500 is an apocalyptic number.

255550505500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255550505500 is an abundant number, since it is smaller than the sum of its proper divisors (312031564100).

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

255550505500 is a wasteful number, since it uses less digits than its factorization.

255550505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8662807 (or 8662795 counting only the distinct ones).

The product of its (nonzero) digits is 156250, while the sum is 37.

The spelling of 255550505500 in words is "two hundred fifty-five billion, five hundred fifty million, five hundred five thousand, five hundred".