25345955279 has 2 divisors, whose sum is σ = 25345955280. Its totient is φ = 25345955278.

The previous prime is 25345955267. The next prime is 25345955281. The reversal of 25345955279 is 97255954352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25345955279 - 2²⁸ = 25077519823 is a prime.

Together with 25345955281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25345955209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672977639 + 12672977640.

It is an arithmetic number, because the mean of its divisors is an integer number (12672977640).

Almost surely, 2^25345955279 is an apocalyptic number.

25345955279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345955279 is an equidigital number, since it uses as much as digits as its factorization.

25345955279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010000, while the sum is 56.

The spelling of 25345955279 in words is "twenty-five billion, three hundred forty-five million, nine hundred fifty-five thousand, two hundred seventy-nine".