25453020824 has 96 divisors (see below), whose sum is σ = 60300646560. Its totient is φ = 9858984960.

The previous prime is 25453020779. The next prime is 25453020893. The reversal of 25453020824 is 42802035452.

It is a happy number.

It is a congruent number.

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, 1161392 + ... + 1183104.

It is an arithmetic number, because the mean of its divisors is an integer number (628131735).

Almost surely, 2^25453020824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25453020824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30150323280).

25453020824 is an abundant number, since it is smaller than the sum of its proper divisors (34847625736).

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

25453020824 is a wasteful number, since it uses less digits than its factorization.

25453020824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921 (or 21906 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 25453020824 in words is "twenty-five billion, four hundred fifty-three million, twenty thousand, eight hundred twenty-four".