25189484880 has 480 divisors, whose sum is σ = 94257717120. Its totient is φ = 5544591360.

The previous prime is 25189484869. The next prime is 25189484909. The reversal of 25189484880 is 8848498152.

It is a super-2 number, since 2×25189484880² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25189484880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42911947 + ... + 42912533.

It is an arithmetic number, because the mean of its divisors is an integer number (196370244).

Almost surely, 2^25189484880 is an apocalyptic number.

25189484880 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 25189484880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47128858560).

25189484880 is an abundant number, since it is smaller than the sum of its proper divisors (69068232240).

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

25189484880 is a wasteful number, since it uses less digits than its factorization.

25189484880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 57.

The spelling of 25189484880 in words is "twenty-five billion, one hundred eighty-nine million, four hundred eighty-four thousand, eight hundred eighty".