25220515050 has 48 divisors (see below), whose sum is σ = 69496534080. Its totient is φ = 6725470320.

The previous prime is 25220515049. The next prime is 25220515069. The reversal of 25220515050 is 5051502252.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 9339582 + ... + 9342281.

It is an arithmetic number, because the mean of its divisors is an integer number (1447844460).

Almost surely, 2^25220515050 is an apocalyptic number.

25220515050 is an abundant number, since it is smaller than the sum of its proper divisors (44276019030).

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

25220515050 is a wasteful number, since it uses less digits than its factorization.

25220515050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681884 (or 18681873 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The spelling of 25220515050 in words is "twenty-five billion, two hundred twenty million, five hundred fifteen thousand, fifty".