25530025550 has 24 divisors (see below), whose sum is σ = 48644042832. Its totient is φ = 9962936000.

The previous prime is 25530025537. The next prime is 25530025579. The reversal of 25530025550 is 5552003552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6224786 + ... + 6228885.

It is an arithmetic number, because the mean of its divisors is an integer number (2026835118).

Almost surely, 2^25530025550 is an apocalyptic number.

25530025550 is a deficient number, since it is larger than the sum of its proper divisors (23114017282).

25530025550 is a wasteful number, since it uses less digits than its factorization.

25530025550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453724 (or 12453719 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 32.

It can be divided in two parts, 2553002 and 5550, that added together give a palindrome (2558552).

The spelling of 25530025550 in words is "twenty-five billion, five hundred thirty million, twenty-five thousand, five hundred fifty".