25996312608 has 288 divisors, whose sum is σ = 81077770368. Its totient is φ = 7270502400.

The previous prime is 25996312577. The next prime is 25996312633. The reversal of 25996312608 is 80621369952.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92513428 + ... + 92513708.

It is an arithmetic number, because the mean of its divisors is an integer number (281520036).

Almost surely, 2^25996312608 is an apocalyptic number.

25996312608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25996312608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40538885184).

25996312608 is an abundant number, since it is smaller than the sum of its proper divisors (55081457760).

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

25996312608 is a wasteful number, since it uses less digits than its factorization.

25996312608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 25996312608 in words is "twenty-five billion, nine hundred ninety-six million, three hundred twelve thousand, six hundred eight".