25918297 has 2 divisors, whose sum is σ = 25918298. Its totient is φ = 25918296.

The previous prime is 25918283. The next prime is 25918301. The reversal of 25918297 is 79281952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25918281 + 16 = 5091^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 25918297 - 2¹¹ = 25916249 is a prime.

It is not a weakly prime, because it can be changed into another prime (25918247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12959148 + 12959149.

It is an arithmetic number, because the mean of its divisors is an integer number (12959149).

Almost surely, 2^25918297 is an apocalyptic number.

It is an amenable number.

25918297 is a deficient number, since it is larger than the sum of its proper divisors (1).

25918297 is an equidigital number, since it uses as much as digits as its factorization.

25918297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 25918297 is about 5091.0015714003. The cubic root of 25918297 is about 295.9389673592.

The spelling of 25918297 in words is "twenty-five million, nine hundred eighteen thousand, two hundred ninety-seven".