25979827 has 2 divisors, whose sum is σ = 25979828. Its totient is φ = 25979826.

The previous prime is 25979813. The next prime is 25979843. The reversal of 25979827 is 72897952.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25979827 is a prime.

It is not a weakly prime, because it can be changed into another prime (25979867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12989913 + 12989914.

It is an arithmetic number, because the mean of its divisors is an integer number (12989914).

Almost surely, 2^25979827 is an apocalyptic number.

25979827 is a deficient number, since it is larger than the sum of its proper divisors (1).

25979827 is an equidigital number, since it uses as much as digits as its factorization.

25979827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 25979827 is about 5097.0410043475. The cubic root of 25979827 is about 296.1729685124.

The spelling of 25979827 in words is "twenty-five million, nine hundred seventy-nine thousand, eight hundred twenty-seven".