8525239 has 2 divisors, whose sum is σ = 8525240. Its totient is φ = 8525238.

The previous prime is 8525227. The next prime is 8525261. The reversal of 8525239 is 9325258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8525239 - 2⁹ = 8524727 is a prime.

8525239 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8825239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4262619 + 4262620.

It is an arithmetic number, because the mean of its divisors is an integer number (4262620).

Almost surely, 2^8525239 is an apocalyptic number.

8525239 is a deficient number, since it is larger than the sum of its proper divisors (1).

8525239 is an equidigital number, since it uses as much as digits as its factorization.

8525239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 34.

The square root of 8525239 is about 2919.8011918622. The cubic root of 8525239 is about 204.2845494066.

The spelling of 8525239 in words is "eight million, five hundred twenty-five thousand, two hundred thirty-nine".