25483889664 has 264 divisors, whose sum is σ = 76984558560. Its totient is φ = 8108900352.

The previous prime is 25483889659. The next prime is 25483889687. The reversal of 25483889664 is 46698838452.

25483889664 is a `hidden beast` number, since 2 + 5 + 483 + 8 + 8 + 96 + 64 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25924117 + ... + 25925099.

Almost surely, 2^25483889664 is an apocalyptic number.

25483889664 is a gapful number since it is divisible by the number (24) 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 25483889664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38492279280).

25483889664 is an abundant number, since it is smaller than the sum of its proper divisors (51500668896).

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

25483889664 is a wasteful number, since it uses less digits than its factorization.

25483889664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1114 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The spelling of 25483889664 in words is "twenty-five billion, four hundred eighty-three million, eight hundred eighty-nine thousand, six hundred sixty-four".