25554084864 has 792 divisors, whose sum is σ = 92364963264. Its totient is φ = 6244761600.

The previous prime is 25554084821. The next prime is 25554084911. The reversal of 25554084864 is 46848045552.

It is a happy number.

It is a super-2 number, since 2×25554084864² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 418919394 + ... + 418919454.

Almost surely, 2^25554084864 is an apocalyptic number.

25554084864 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 25554084864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46182481632).

25554084864 is an abundant number, since it is smaller than the sum of its proper divisors (66810878400).

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

25554084864 is a wasteful number, since it uses less digits than its factorization.

25554084864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 51.

The spelling of 25554084864 in words is "twenty-five billion, five hundred fifty-four million, eighty-four thousand, eight hundred sixty-four".