25881056032 has 96 divisors (see below), whose sum is σ = 58086262080. Its totient is φ = 11264762880.

The previous prime is 25881056023. The next prime is 25881056041. The reversal of 25881056032 is 23065018852.

It is an interprime number because it is at equal distance from previous prime (25881056023) and next prime (25881056041).

It is a super-2 number, since 2×25881056032² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493807 + ... + 543697.

It is an arithmetic number, because the mean of its divisors is an integer number (605065230).

Almost surely, 2^25881056032 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 25881056032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29043131040).

25881056032 is an abundant number, since it is smaller than the sum of its proper divisors (32205206048).

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

25881056032 is a wasteful number, since it uses less digits than its factorization.

25881056032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49986 (or 49978 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 25881056032 in words is "twenty-five billion, eight hundred eighty-one million, fifty-six thousand, thirty-two".