225319999 has 2 divisors, whose sum is σ = 225320000. Its totient is φ = 225319998.

The previous prime is 225319987. The next prime is 225320003. The reversal of 225319999 is 999913522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225319999 - 2⁵ = 225319967 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 (225319949) 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, 112659999 + 112660000.

It is an arithmetic number, because the mean of its divisors is an integer number (112660000).

Almost surely, 2^225319999 is an apocalyptic number.

225319999 is a deficient number, since it is larger than the sum of its proper divisors (1).

225319999 is an equidigital number, since it uses as much as digits as its factorization.

225319999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 49.

The square root of 225319999 is about 15010.6628434590. The cubic root of 225319999 is about 608.5084034978.

The spelling of 225319999 in words is "two hundred twenty-five million, three hundred nineteen thousand, nine hundred ninety-nine".