25997227 has 2 divisors, whose sum is σ = 25997228. Its totient is φ = 25997226.

The previous prime is 25997183. The next prime is 25997243. The reversal of 25997227 is 72279952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25997227 - 2¹⁵ = 25964459 is a prime.

It is not a weakly prime, because it can be changed into another prime (25997297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998613 + 12998614.

It is an arithmetic number, because the mean of its divisors is an integer number (12998614).

Almost surely, 2^25997227 is an apocalyptic number.

25997227 is a deficient number, since it is larger than the sum of its proper divisors (1).

25997227 is an equidigital number, since it uses as much as digits as its factorization.

25997227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 25997227 is about 5098.7475913208. The cubic root of 25997227 is about 296.2390744130.

The spelling of 25997227 in words is "twenty-five million, nine hundred ninety-seven thousand, two hundred twenty-seven".