25169312279 has 2 divisors, whose sum is σ = 25169312280. Its totient is φ = 25169312278.

The previous prime is 25169312263. The next prime is 25169312299. The reversal of 25169312279 is 97221396152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25169312279 - 2⁴ = 25169312263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25169312239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12584656139 + 12584656140.

It is an arithmetic number, because the mean of its divisors is an integer number (12584656140).

Almost surely, 2^25169312279 is an apocalyptic number.

25169312279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25169312279 is an equidigital number, since it uses as much as digits as its factorization.

25169312279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The spelling of 25169312279 in words is "twenty-five billion, one hundred sixty-nine million, three hundred twelve thousand, two hundred seventy-nine".