25956265968 has 200 divisors, whose sum is σ = 76436857728. Its totient is φ = 8502185088.

The previous prime is 25956265967. The next prime is 25956266003. The reversal of 25956265968 is 86956265952.

25956265968 is a `hidden beast` number, since 2 + 5 + 9 + 562 + 6 + 5 + 9 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25956265963) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24417405 + ... + 24418467.

Almost surely, 2^25956265968 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 25956265968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38218428864).

25956265968 is an abundant number, since it is smaller than the sum of its proper divisors (50480591760).

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

25956265968 is a wasteful number, since it uses less digits than its factorization.

25956265968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393 (or 1378 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 63.

The spelling of 25956265968 in words is "twenty-five billion, nine hundred fifty-six million, two hundred sixty-five thousand, nine hundred sixty-eight".