25013321279 has 2 divisors, whose sum is σ = 25013321280. Its totient is φ = 25013321278.

The previous prime is 25013321273. The next prime is 25013321441. The reversal of 25013321279 is 97212331052.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25013321279 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25013321273) 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 as a sum of consecutive naturals, namely, 12506660639 + 12506660640.

It is an arithmetic number, because the mean of its divisors is an integer number (12506660640).

Almost surely, 2^25013321279 is an apocalyptic number.

25013321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013321279 is an equidigital number, since it uses as much as digits as its factorization.

25013321279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 25013321279 in words is "twenty-five billion, thirteen million, three hundred twenty-one thousand, two hundred seventy-nine".