225999539 has 2 divisors, whose sum is σ = 225999540. Its totient is φ = 225999538.

The previous prime is 225999469. The next prime is 225999577. The reversal of 225999539 is 935999522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225999539 - 2¹⁶ = 225934003 is a prime.

It is not a weakly prime, because it can be changed into another prime (225999239) 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, 112999769 + 112999770.

It is an arithmetic number, because the mean of its divisors is an integer number (112999770).

Almost surely, 2^225999539 is an apocalyptic number.

225999539 is a deficient number, since it is larger than the sum of its proper divisors (1).

225999539 is an equidigital number, since it uses as much as digits as its factorization.

225999539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1968300, while the sum is 53.

The square root of 225999539 is about 15033.2810457332. The cubic root of 225999539 is about 609.1195207261.

The spelling of 225999539 in words is "two hundred twenty-five million, nine hundred ninety-nine thousand, five hundred thirty-nine".