25297908969 has 4 divisors (see below), whose sum is σ = 33730545296. Its totient is φ = 16865272644.

The previous prime is 25297908943. The next prime is 25297909003. The reversal of 25297908969 is 96980979252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25297908969 - 2¹⁶ = 25297843433 is a prime.

It is a super-2 number, since 2×25297908969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25297908919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4216318159 + ... + 4216318164.

It is an arithmetic number, because the mean of its divisors is an integer number (8432636324).

Almost surely, 2^25297908969 is an apocalyptic number.

It is an amenable number.

25297908969 is a deficient number, since it is larger than the sum of its proper divisors (8432636327).

25297908969 is an equidigital number, since it uses as much as digits as its factorization.

25297908969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8432636326.

The product of its (nonzero) digits is 44089920, while the sum is 66.

The spelling of 25297908969 in words is "twenty-five billion, two hundred ninety-seven million, nine hundred eight thousand, nine hundred sixty-nine".