25489632000 has 576 divisors, whose sum is σ = 98138686464. Its totient is φ = 5743411200.

The previous prime is 25489631953. The next prime is 25489632019. The reversal of 25489632000 is 23698452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25489632000.

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, 55775772 + ... + 55776228.

It is an arithmetic number, because the mean of its divisors is an integer number (170379664).

Almost surely, 2^25489632000 is an apocalyptic number.

25489632000 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 25489632000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49069343232).

25489632000 is an abundant number, since it is smaller than the sum of its proper divisors (72649054464).

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

25489632000 is an equidigital number, since it uses as much as digits as its factorization.

25489632000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 25489632000 in words is "twenty-five billion, four hundred eighty-nine million, six hundred thirty-two thousand".