255528305500 has 96 divisors (see below), whose sum is σ = 601302356928. Its totient is φ = 94301856000.

The previous prime is 255528305497. The next prime is 255528305537. The reversal of 255528305500 is 5503825552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14726830 + ... + 14744170.

It is an arithmetic number, because the mean of its divisors is an integer number (6263566218).

Almost surely, 2^255528305500 is an apocalyptic number.

255528305500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255528305500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300651178464).

255528305500 is an abundant number, since it is smaller than the sum of its proper divisors (345774051428).

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

255528305500 is a wasteful number, since it uses less digits than its factorization.

255528305500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640 (or 19628 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 255528305500 in words is "two hundred fifty-five billion, five hundred twenty-eight million, three hundred five thousand, five hundred".