25325239 has 2 divisors, whose sum is σ = 25325240. Its totient is φ = 25325238.

The previous prime is 25325227. The next prime is 25325243. The reversal of 25325239 is 93252352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25325239 - 2²¹ = 23228087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25325239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25325639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12662619 + 12662620.

It is an arithmetic number, because the mean of its divisors is an integer number (12662620).

Almost surely, 2^25325239 is an apocalyptic number.

25325239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25325239 is an equidigital number, since it uses as much as digits as its factorization.

25325239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 31.

The square root of 25325239 is about 5032.4188021269. The cubic root of 25325239 is about 293.6643206284.

The spelling of 25325239 in words is "twenty-five million, three hundred twenty-five thousand, two hundred thirty-nine".