25159243 has 2 divisors, whose sum is σ = 25159244. Its totient is φ = 25159242.

The previous prime is 25159229. The next prime is 25159247. The reversal of 25159243 is 34295152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25159243 is a prime.

It is not a weakly prime, because it can be changed into another prime (25159247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12579621 + 12579622.

It is an arithmetic number, because the mean of its divisors is an integer number (12579622).

Almost surely, 2^25159243 is an apocalyptic number.

25159243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25159243 is an equidigital number, since it uses as much as digits as its factorization.

25159243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 25159243 is about 5015.8990221096. The cubic root of 25159243 is about 293.0212994180.

The spelling of 25159243 in words is "twenty-five million, one hundred fifty-nine thousand, two hundred forty-three".