25699379 has 2 divisors, whose sum is σ = 25699380. Its totient is φ = 25699378.

The previous prime is 25699369. The next prime is 25699439. The reversal of 25699379 is 97399652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25699379 - 2⁴ = 25699363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25699309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12849689 + 12849690.

It is an arithmetic number, because the mean of its divisors is an integer number (12849690).

Almost surely, 2^25699379 is an apocalyptic number.

25699379 is a deficient number, since it is larger than the sum of its proper divisors (1).

25699379 is an equidigital number, since it uses as much as digits as its factorization.

25699379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 50.

The square root of 25699379 is about 5069.4554934431. The cubic root of 25699379 is about 295.1033976340.

The spelling of 25699379 in words is "twenty-five million, six hundred ninety-nine thousand, three hundred seventy-nine".