25500085680 has 160 divisors (see below), whose sum is σ = 84078618624. Its totient is φ = 6371094528.

The previous prime is 25500085643. The next prime is 25500085691. The reversal of 25500085680 is 8658000552.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 895827 + ... + 923853.

Almost surely, 2^25500085680 is an apocalyptic number.

25500085680 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 25500085680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42039309312).

25500085680 is an abundant number, since it is smaller than the sum of its proper divisors (58578532944).

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

25500085680 is a wasteful number, since it uses less digits than its factorization.

25500085680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28283 (or 28277 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 25500085680 in words is "twenty-five billion, five hundred million, eighty-five thousand, six hundred eighty".