25499572896 has 288 divisors, whose sum is σ = 81249194880. Its totient is φ = 6858473472.

The previous prime is 25499572831. The next prime is 25499572927. The reversal of 25499572896 is 69827599452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62345940 + ... + 62346348.

It is an arithmetic number, because the mean of its divisors is an integer number (282115260).

Almost surely, 2^25499572896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25499572896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40624597440).

25499572896 is an abundant number, since it is smaller than the sum of its proper divisors (55749621984).

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

25499572896 is a wasteful number, since it uses less digits than its factorization.

25499572896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 697 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 66.

The spelling of 25499572896 in words is "twenty-five billion, four hundred ninety-nine million, five hundred seventy-two thousand, eight hundred ninety-six".