25439233896 has 80 divisors (see below), whose sum is σ = 71342742240. Its totient is φ = 8469113760.

The previous prime is 25439233873. The next prime is 25439233951. The reversal of 25439233896 is 69833293452.

It is a happy number.

25439233896 is a `hidden beast` number, since 2 + 543 + 9 + 2 + 3 + 3 + 8 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 501325 + ... + 549731.

It is an arithmetic number, because the mean of its divisors is an integer number (891784278).

Almost surely, 2^25439233896 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 25439233896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35671371120).

25439233896 is an abundant number, since it is smaller than the sum of its proper divisors (45903508344).

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

25439233896 is a wasteful number, since it uses less digits than its factorization.

25439233896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49236 (or 49223 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 54.

The spelling of 25439233896 in words is "twenty-five billion, four hundred thirty-nine million, two hundred thirty-three thousand, eight hundred ninety-six".