25552525500 has 72 divisors (see below), whose sum is σ = 80609714640. Its totient is φ = 6814005600.

The previous prime is 25552525483. The next prime is 25552525511. The reversal of 25552525500 is 552525552.

25552525500 is a `hidden beast` number, since 2 + 5 + 5 + 52 + 52 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2834670 + ... + 2843669.

It is an arithmetic number, because the mean of its divisors is an integer number (1119579370).

Almost surely, 2^25552525500 is an apocalyptic number.

25552525500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25552525500 is an abundant number, since it is smaller than the sum of its proper divisors (55057189140).

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

25552525500 is a wasteful number, since it uses less digits than its factorization.

25552525500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678364 (or 5678349 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 36.

It can be divided in two parts, 25552525 and 500, that added together give a square (25553025 = 5055²).

The spelling of 25552525500 in words is "twenty-five billion, five hundred fifty-two million, five hundred twenty-five thousand, five hundred".