25379422864 has 80 divisors (see below), whose sum is σ = 52006671360. Its totient is φ = 11974469760.

The previous prime is 25379422813. The next prime is 25379422879. The reversal of 25379422864 is 46822497352.

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, 8540899 + ... + 8543869.

It is an arithmetic number, because the mean of its divisors is an integer number (650083392).

Almost surely, 2^25379422864 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 25379422864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26003335680).

25379422864 is an abundant number, since it is smaller than the sum of its proper divisors (26627248496).

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

25379422864 is a wasteful number, since it uses less digits than its factorization.

25379422864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308 (or 3302 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The spelling of 25379422864 in words is "twenty-five billion, three hundred seventy-nine million, four hundred twenty-two thousand, eight hundred sixty-four".