25935317697 has 16 divisors (see below), whose sum is σ = 34787499840. Its totient is φ = 17186751552.

The previous prime is 25935317627. The next prime is 25935317713. The reversal of 25935317697 is 79671353952.

It is not a de Polignac number, because 25935317697 - 2²⁷ = 25801099969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25935317627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579743 + ... + 1596075.

It is an arithmetic number, because the mean of its divisors is an integer number (2174218740).

Almost surely, 2^25935317697 is an apocalyptic number.

It is an amenable number.

25935317697 is a deficient number, since it is larger than the sum of its proper divisors (8852182143).

25935317697 is a wasteful number, since it uses less digits than its factorization.

25935317697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472.

The product of its digits is 10716300, while the sum is 57.

The spelling of 25935317697 in words is "twenty-five billion, nine hundred thirty-five million, three hundred seventeen thousand, six hundred ninety-seven".