25379279 has 2 divisors, whose sum is σ = 25379280. Its totient is φ = 25379278.

The previous prime is 25379257. The next prime is 25379311. The reversal of 25379279 is 97297352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25379279 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 (25379219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12689639 + 12689640.

It is an arithmetic number, because the mean of its divisors is an integer number (12689640).

Almost surely, 2^25379279 is an apocalyptic number.

25379279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25379279 is an equidigital number, since it uses as much as digits as its factorization.

25379279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 25379279 is about 5037.7851284071. The cubic root of 25379279 is about 293.8730497610.

The spelling of 25379279 in words is "twenty-five million, three hundred seventy-nine thousand, two hundred seventy-nine".