25057503280 has 20 divisors (see below), whose sum is σ = 58258695312. Its totient is φ = 10023001280.

The previous prime is 25057503271. The next prime is 25057503301. The reversal of 25057503280 is 8230575052.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156609316 + ... + 156609475.

Almost surely, 2^25057503280 is an apocalyptic number.

25057503280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25057503280 is an abundant number, since it is smaller than the sum of its proper divisors (33201192032).

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

25057503280 is a wasteful number, since it uses less digits than its factorization.

25057503280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313218804 (or 313218798 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 25057503280 in words is "twenty-five billion, fifty-seven million, five hundred three thousand, two hundred eighty".