225326639 has 2 divisors, whose sum is σ = 225326640. Its totient is φ = 225326638.

The previous prime is 225326627. The next prime is 225326659. The reversal of 225326639 is 936623522.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225326639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225326659) 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, 112663319 + 112663320.

It is an arithmetic number, because the mean of its divisors is an integer number (112663320).

Almost surely, 2^225326639 is an apocalyptic number.

225326639 is a deficient number, since it is larger than the sum of its proper divisors (1).

225326639 is an equidigital number, since it uses as much as digits as its factorization.

225326639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

The square root of 225326639 is about 15010.8840179385. The cubic root of 225326639 is about 608.5143808576.

The spelling of 225326639 in words is "two hundred twenty-five million, three hundred twenty-six thousand, six hundred thirty-nine".