255206503720 has 64 divisors (see below), whose sum is σ = 656583408000. Its totient is φ = 87454291200.

The previous prime is 255206503697. The next prime is 255206503771. The reversal of 255206503720 is 27305602552.

It is a self number, because there is not a number n which added to its sum of digits gives 255206503720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311895 + ... + 779545.

It is an arithmetic number, because the mean of its divisors is an integer number (10259115750).

Almost surely, 2^255206503720 is an apocalyptic number.

255206503720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255206503720 is an abundant number, since it is smaller than the sum of its proper divisors (401376904280).

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

255206503720 is a wasteful number, since it uses less digits than its factorization.

255206503720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469618 (or 469614 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 255206503720 in words is "two hundred fifty-five billion, two hundred six million, five hundred three thousand, seven hundred twenty".