25500319488 has 432 divisors, whose sum is σ = 87176567296. Its totient is φ = 7017062400.

The previous prime is 25500319487. The next prime is 25500319499. The reversal of 25500319488 is 88491300552.

25500319488 is a `hidden beast` number, since 2 + 550 + 0 + 3 + 1 + 94 + 8 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500319487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90106995 + ... + 90107277.

Almost surely, 2^25500319488 is an apocalyptic number.

25500319488 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 25500319488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43588283648).

25500319488 is an abundant number, since it is smaller than the sum of its proper divisors (61676247808).

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

25500319488 is a wasteful number, since it uses less digits than its factorization.

25500319488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 25500319488 in words is "twenty-five billion, five hundred million, three hundred nineteen thousand, four hundred eighty-eight".