25900980 has 96 divisors (see below), whose sum is σ = 83994624. Its totient is φ = 5841024.

The previous prime is 25900961. The next prime is 25900981. The reversal of 25900980 is 8900952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25900981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34489 + ... + 35231.

It is an arithmetic number, because the mean of its divisors is an integer number (874944).

Almost surely, 2^25900980 is an apocalyptic number.

25900980 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 25900980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41997312).

25900980 is an abundant number, since it is smaller than the sum of its proper divisors (58093644).

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

25900980 is a wasteful number, since it uses less digits than its factorization.

25900980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 25900980 is about 5089.3005413318. The cubic root of 25900980 is about 295.8730433150.

The spelling of 25900980 in words is "twenty-five million, nine hundred thousand, nine hundred eighty".