25641713699 has 8 divisors (see below), whose sum is σ = 29312085600. Its totient is φ = 21973159296.

The previous prime is 25641713659. The next prime is 25641713753. The reversal of 25641713699 is 99631714652.

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 25641713699 - 2³² = 21346746403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25641713699.

It is not an unprimeable number, because it can be changed into a prime (25641713659) 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, 424004 + ... + 480689.

It is an arithmetic number, because the mean of its divisors is an integer number (3664010700).

Almost surely, 2^25641713699 is an apocalyptic number.

25641713699 is a deficient number, since it is larger than the sum of its proper divisors (3670371901).

25641713699 is an equidigital number, since it uses as much as digits as its factorization.

25641713699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908749.

The product of its digits is 2449440, while the sum is 53.

The spelling of 25641713699 in words is "twenty-five billion, six hundred forty-one million, seven hundred thirteen thousand, six hundred ninety-nine".