25765974117569 has 12 divisors (see below), whose sum is σ = 29972945576448. Its totient is φ = 22084913025000.

The previous prime is 25765974117553. The next prime is 25765974117607. The reversal of 25765974117569 is 96571147956752.

It is a happy number.

It is not a de Polignac number, because 25765974117569 - 2⁴ = 25765974117553 is a prime.

It is a super-2 number, since 2×25765974117569² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25765974117496 and 25765974117505.

It is not an unprimeable number, because it can be changed into a prime (25765974111569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2911184 + ... + 7746414.

It is an arithmetic number, because the mean of its divisors is an integer number (2497745464704).

Almost surely, 2^{25765974117569} is an apocalyptic number.

It is an amenable number.

25765974117569 is a deficient number, since it is larger than the sum of its proper divisors (4206971458879).

25765974117569 is a wasteful number, since it uses less digits than its factorization.

25765974117569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943996 (or 4943989 counting only the distinct ones).

The product of its digits is 1000188000, while the sum is 74.

The spelling of 25765974117569 in words is "twenty-five trillion, seven hundred sixty-five billion, nine hundred seventy-four million, one hundred seventeen thousand, five hundred sixty-nine".