255515705772 has 24 divisors (see below), whose sum is σ = 596528980992. Its totient is φ = 85125378000.

The previous prime is 255515705749. The next prime is 255515705791. The reversal of 255515705772 is 277507515552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5792604 + ... + 5836547.

It is an arithmetic number, because the mean of its divisors is an integer number (24855374208).

Almost surely, 2^255515705772 is an apocalyptic number.

It is an amenable number.

255515705772 is an abundant number, since it is smaller than the sum of its proper divisors (341013275220).

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

255515705772 is a wasteful number, since it uses less digits than its factorization.

255515705772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630989 (or 11630987 counting only the distinct ones).

The product of its (nonzero) digits is 4287500, while the sum is 51.

The spelling of 255515705772 in words is "two hundred fifty-five billion, five hundred fifteen million, seven hundred five thousand, seven hundred seventy-two".