25453908752 has 20 divisors (see below), whose sum is σ = 51912577680. Its totient is φ = 12057114528.

The previous prime is 25453908721. The next prime is 25453908787. The reversal of 25453908752 is 25780935452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25453908752.

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, 41864678 + ... + 41865285.

It is an arithmetic number, because the mean of its divisors is an integer number (2595628884).

Almost surely, 2^25453908752 is an apocalyptic number.

It is an amenable number.

25453908752 is an abundant number, since it is smaller than the sum of its proper divisors (26458668928).

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

25453908752 is a wasteful number, since it uses less digits than its factorization.

25453908752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83729990 (or 83729984 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 25453908752 in words is "twenty-five billion, four hundred fifty-three million, nine hundred eight thousand, seven hundred fifty-two".