25831322496 has 320 divisors, whose sum is σ = 90008724960. Its totient is φ = 7199539200.

The previous prime is 25831322467. The next prime is 25831322497. The reversal of 25831322496 is 69422313852.

25831322496 is a `hidden beast` number, since 2 + 583 + 1 + 3 + 22 + 49 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25831322497) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2971276 + ... + 2979956.

Almost surely, 2^25831322496 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 25831322496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45004362480).

25831322496 is an abundant number, since it is smaller than the sum of its proper divisors (64177402464).

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

25831322496 is an equidigital number, since it uses as much as digits as its factorization.

25831322496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755 (or 8734 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 25831322496 in words is "twenty-five billion, eight hundred thirty-one million, three hundred twenty-two thousand, four hundred ninety-six".