25489080408 has 256 divisors, whose sum is σ = 73156608000. Its totient is φ = 7332684800.

The previous prime is 25489080391. The next prime is 25489080413. The reversal of 25489080408 is 80408098452.

It is a Cunningham number, because it is equal to 159653²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106648753 + ... + 106648991.

It is an arithmetic number, because the mean of its divisors is an integer number (285768000).

Almost surely, 2^25489080408 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 25489080408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36578304000).

25489080408 is an abundant number, since it is smaller than the sum of its proper divisors (47667527592).

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

25489080408 is a wasteful number, since it uses less digits than its factorization.

25489080408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 25489080408 in words is "twenty-five billion, four hundred eighty-nine million, eighty thousand, four hundred eight".