25899321980160 has 432 divisors, whose sum is σ = 93880244989440. Its totient is φ = 6583933255680.

The previous prime is 25899321980159. The next prime is 25899321980171. The reversal of 25899321980160 is 6108912399852.

25899321980160 is a `hidden beast` number, since 2 + 589 + 9 + 32 + 1 + 9 + 8 + 0 + 16 + 0 = 666.

It is a congruent number.

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, 23385826 + ... + 24468254.

It is an arithmetic number, because the mean of its divisors is an integer number (217315381920).

Almost surely, 2^{25899321980160} is an apocalyptic number.

25899321980160 is a gapful number since it is divisible by the number (20) 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 25899321980160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46940122494720).

25899321980160 is an abundant number, since it is smaller than the sum of its proper divisors (67980923009280).

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

25899321980160 is a wasteful number, since it uses less digits than its factorization.

25899321980160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082554 (or 1082537 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 25899321980160 in words is "twenty-five trillion, eight hundred ninety-nine billion, three hundred twenty-one million, nine hundred eighty thousand, one hundred sixty".