25259243 has 2 divisors, whose sum is σ = 25259244. Its totient is φ = 25259242.

The previous prime is 25259209. The next prime is 25259249. The reversal of 25259243 is 34295252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25259243 - 2¹⁴ = 25242859 is a prime.

It is not a weakly prime, because it can be changed into another prime (25259249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12629621 + 12629622.

It is an arithmetic number, because the mean of its divisors is an integer number (12629622).

Almost surely, 2^25259243 is an apocalyptic number.

25259243 is a deficient number, since it is larger than the sum of its proper divisors (1).

25259243 is an equidigital number, since it uses as much as digits as its factorization.

25259243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 25259243 is about 5025.8574392834. The cubic root of 25259243 is about 293.4090083967.

It can be divided in two parts, 252 and 59243, that added together give a palindrome (59495).

The spelling of 25259243 in words is "twenty-five million, two hundred fifty-nine thousand, two hundred forty-three".