25969297807 has 4 divisors (see below), whose sum is σ = 26261087760. Its totient is φ = 25677507856.

The previous prime is 25969297799. The next prime is 25969297817. The reversal of 25969297807 is 70879296952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25969297807 - 2³ = 25969297799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969297817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145894843 + ... + 145895020.

It is an arithmetic number, because the mean of its divisors is an integer number (6565271940).

Almost surely, 2^25969297807 is an apocalyptic number.

25969297807 is a deficient number, since it is larger than the sum of its proper divisors (291789953).

25969297807 is an equidigital number, since it uses as much as digits as its factorization.

25969297807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291789952.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 25969297807 in words is "twenty-five billion, nine hundred sixty-nine million, two hundred ninety-seven thousand, eight hundred seven".