25424834976 has 144 divisors (see below), whose sum is σ = 78335921664. Its totient is φ = 7790856192.

The previous prime is 25424834947. The next prime is 25424835043. The reversal of 25424834976 is 67943842452.

It is a happy number.

25424834976 is a `hidden beast` number, since 2 + 54 + 2 + 483 + 49 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150145 + ... + 270911.

It is an arithmetic number, because the mean of its divisors is an integer number (543999456).

Almost surely, 2^25424834976 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 25424834976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39167960832).

25424834976 is an abundant number, since it is smaller than the sum of its proper divisors (52911086688).

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

25424834976 is a wasteful number, since it uses less digits than its factorization.

25424834976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120843 (or 120832 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 25424834976 in words is "twenty-five billion, four hundred twenty-four million, eight hundred thirty-four thousand, nine hundred seventy-six".