25979275751 has 16 divisors (see below), whose sum is σ = 30654425760. Its totient is φ = 21705563520.

The previous prime is 25979275741. The next prime is 25979275759. The reversal of 25979275751 is 15757297952.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25979275751 is a prime.

It is a super-2 number, since 2×25979275751² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25979275759) 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, 363920 + ... + 429413.

It is an arithmetic number, because the mean of its divisors is an integer number (1915901610).

Almost surely, 2^25979275751 is an apocalyptic number.

25979275751 is a deficient number, since it is larger than the sum of its proper divisors (4675150009).

25979275751 is a wasteful number, since it uses less digits than its factorization.

25979275751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793586.

The product of its digits is 13891500, while the sum is 59.

The spelling of 25979275751 in words is "twenty-five billion, nine hundred seventy-nine million, two hundred seventy-five thousand, seven hundred fifty-one".