25640110717 has 8 divisors (see below), whose sum is σ = 27613827360. Its totient is φ = 23666594160.

The previous prime is 25640110711. The next prime is 25640110733. The reversal of 25640110717 is 71701104652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25640110717 - 2³¹ = 23492627069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25640110711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314634 + ... + 387652.

It is an arithmetic number, because the mean of its divisors is an integer number (3451728420).

Almost surely, 2^25640110717 is an apocalyptic number.

It is an amenable number.

25640110717 is a deficient number, since it is larger than the sum of its proper divisors (1973716643).

25640110717 is a wasteful number, since it uses less digits than its factorization.

25640110717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100043.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 25640110717 in words is "twenty-five billion, six hundred forty million, one hundred ten thousand, seven hundred seventeen".