25716097656 has 96 divisors (see below), whose sum is σ = 73519056000. Its totient is φ = 8098097472.

The previous prime is 25716097601. The next prime is 25716097663. The reversal of 25716097656 is 65679061752.

25716097656 is a `hidden beast` number, since 2 + 571 + 6 + 0 + 9 + 7 + 65 + 6 = 666.

It is a super-2 number, since 2×25716097656² (a number of 22 digits) contains 22 as substring.

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, 464931 + ... + 517293.

It is an arithmetic number, because the mean of its divisors is an integer number (765823500).

Almost surely, 2^25716097656 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 25716097656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36759528000).

25716097656 is an abundant number, since it is smaller than the sum of its proper divisors (47802958344).

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

25716097656 is a wasteful number, since it uses less digits than its factorization.

25716097656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52753 (or 52746 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 25716097656 in words is "twenty-five billion, seven hundred sixteen million, ninety-seven thousand, six hundred fifty-six".