25340344688 has 80 divisors (see below), whose sum is σ = 52050835200. Its totient is φ = 11917808640.

The previous prime is 25340344661. The next prime is 25340344709. The reversal of 25340344688 is 88644304352.

It is a congruent number.

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, 40937243 + ... + 40937861.

It is an arithmetic number, because the mean of its divisors is an integer number (650635440).

Almost surely, 2^25340344688 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 25340344688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26025417600).

25340344688 is an abundant number, since it is smaller than the sum of its proper divisors (26710490512).

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

25340344688 is a wasteful number, since it uses less digits than its factorization.

25340344688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The spelling of 25340344688 in words is "twenty-five billion, three hundred forty million, three hundred forty-four thousand, six hundred eighty-eight".