25383936840 has 32 divisors (see below), whose sum is σ = 76151810880. Its totient is φ = 6769049792.

The previous prime is 25383936829. The next prime is 25383936857. The reversal of 25383936840 is 4863938352.

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, 105766284 + ... + 105766523.

It is an arithmetic number, because the mean of its divisors is an integer number (2379744090).

Almost surely, 2^25383936840 is an apocalyptic number.

25383936840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25383936840 is an abundant number, since it is smaller than the sum of its proper divisors (50767874040).

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

25383936840 is a wasteful number, since it uses less digits than its factorization.

25383936840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211532821 (or 211532817 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 25383936840 in words is "twenty-five billion, three hundred eighty-three million, nine hundred thirty-six thousand, eight hundred forty".