25551324288 has 320 divisors, whose sum is σ = 87333966720. Its totient is φ = 7264235520.

The previous prime is 25551324251. The next prime is 25551324307. The reversal of 25551324288 is 88242315552.

25551324288 is a `hidden beast` number, since 2 + 55 + 513 + 2 + 4 + 2 + 88 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16909453 + ... + 16910963.

It is an arithmetic number, because the mean of its divisors is an integer number (272918646).

Almost surely, 2^25551324288 is an apocalyptic number.

25551324288 is a gapful number since it is divisible by the number (28) 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 25551324288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666983360).

25551324288 is an abundant number, since it is smaller than the sum of its proper divisors (61782642432).

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

25551324288 is a wasteful number, since it uses less digits than its factorization.

25551324288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777 (or 1756 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The spelling of 25551324288 in words is "twenty-five billion, five hundred fifty-one million, three hundred twenty-four thousand, two hundred eighty-eight".