25632257480 has 32 divisors (see below), whose sum is σ = 57698956800. Its totient is φ = 10248213696.

The previous prime is 25632257459. The next prime is 25632257509. The reversal of 25632257480 is 8475223652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57320 + ... + 233559.

It is an arithmetic number, because the mean of its divisors is an integer number (1803092400).

Almost surely, 2^25632257480 is an apocalyptic number.

25632257480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25632257480 is an abundant number, since it is smaller than the sum of its proper divisors (32066699320).

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

25632257480 is a wasteful number, since it uses less digits than its factorization.

25632257480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293093 (or 293089 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 25632257480 in words is "twenty-five billion, six hundred thirty-two million, two hundred fifty-seven thousand, four hundred eighty".