25366431168 has 168 divisors, whose sum is σ = 79022143200. Its totient is φ = 7733200896.

The previous prime is 25366431161. The next prime is 25366431173. The reversal of 25366431168 is 86113466352.

25366431168 is a `hidden beast` number, since 2 + 53 + 6 + 6 + 431 + 168 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25366431161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 800653 + ... + 831731.

It is an arithmetic number, because the mean of its divisors is an integer number (470369900).

Almost surely, 2^25366431168 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 25366431168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39511071600).

25366431168 is an abundant number, since it is smaller than the sum of its proper divisors (53655712032).

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

25366431168 is a wasteful number, since it uses less digits than its factorization.

25366431168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31219 (or 31206 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 25366431168 in words is "twenty-five billion, three hundred sixty-six million, four hundred thirty-one thousand, one hundred sixty-eight".