25461522432 has 264 divisors, whose sum is σ = 78517352160. Its totient is φ = 7927234560.

The previous prime is 25461522409. The next prime is 25461522517. The reversal of 25461522432 is 23422516452.

25461522432 is a `hidden beast` number, since 2 + 5 + 4 + 615 + 2 + 2 + 4 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358612957 + ... + 358613027.

Almost surely, 2^25461522432 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 25461522432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39258676080).

25461522432 is an abundant number, since it is smaller than the sum of its proper divisors (53055829728).

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

25461522432 is an frugal number, since it uses more digits than its factorization.

25461522432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 95 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The spelling of 25461522432 in words is "twenty-five billion, four hundred sixty-one million, five hundred twenty-two thousand, four hundred thirty-two".