25797459687 has 24 divisors (see below), whose sum is σ = 35259142896. Its totient is φ = 16777258368.

The previous prime is 25797459673. The next prime is 25797459697. The reversal of 25797459687 is 78695479752.

It is not a de Polignac number, because 25797459687 - 2²³ = 25789071079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25797459697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2068033 + ... + 2080469.

It is an arithmetic number, because the mean of its divisors is an integer number (1469130954).

Almost surely, 2^25797459687 is an apocalyptic number.

25797459687 is a deficient number, since it is larger than the sum of its proper divisors (9461683209).

25797459687 is a wasteful number, since it uses less digits than its factorization.

25797459687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12847 (or 12800 counting only the distinct ones).

The product of its digits is 266716800, while the sum is 69.

The spelling of 25797459687 in words is "twenty-five billion, seven hundred ninety-seven million, four hundred fifty-nine thousand, six hundred eighty-seven".