25189908480 has 384 divisors, whose sum is σ = 95323541040. Its totient is φ = 6102712320.

The previous prime is 25189908463. The next prime is 25189908481. The reversal of 25189908480 is 8480998152.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25189908481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16219384 + ... + 16220936.

Almost surely, 2^25189908480 is an apocalyptic number.

25189908480 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 25189908480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47661770520).

25189908480 is an abundant number, since it is smaller than the sum of its proper divisors (70133632560).

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

25189908480 is a wasteful number, since it uses less digits than its factorization.

25189908480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 25189908480 in words is "twenty-five billion, one hundred eighty-nine million, nine hundred eight thousand, four hundred eighty".