225324989 has 2 divisors, whose sum is σ = 225324990. Its totient is φ = 225324988.

The previous prime is 225324943. The next prime is 225325013. The reversal of 225324989 is 989423522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220284964 + 5040025 = 14842^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 225324989 - 2⁸ = 225324733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225324929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112662494 + 112662495.

It is an arithmetic number, because the mean of its divisors is an integer number (112662495).

Almost surely, 2^225324989 is an apocalyptic number.

It is an amenable number.

225324989 is a deficient number, since it is larger than the sum of its proper divisors (1).

225324989 is an equidigital number, since it uses as much as digits as its factorization.

225324989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 225324989 is about 15010.8290577170. The cubic root of 225324989 is about 608.5128955306.

The spelling of 225324989 in words is "two hundred twenty-five million, three hundred twenty-four thousand, nine hundred eighty-nine".