255277505500 has 24 divisors (see below), whose sum is σ = 557526073104. Its totient is φ = 102111002000.

The previous prime is 255277505419. The next prime is 255277505503. The reversal of 255277505500 is 5505772552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255277505503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255277006 + ... + 255278005.

It is an arithmetic number, because the mean of its divisors is an integer number (23230253046).

Almost surely, 2^255277505500 is an apocalyptic number.

255277505500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255277505500 is an abundant number, since it is smaller than the sum of its proper divisors (302248567604).

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

255277505500 is a wasteful number, since it uses less digits than its factorization.

255277505500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510555030 (or 510555018 counting only the distinct ones).

The product of its (nonzero) digits is 612500, while the sum is 43.

The spelling of 255277505500 in words is "two hundred fifty-five billion, two hundred seventy-seven million, five hundred five thousand, five hundred".