225415009 has 2 divisors, whose sum is σ = 225415010. Its totient is φ = 225415008.

The previous prime is 225414971. The next prime is 225415013. The reversal of 225415009 is 900514522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199374400 + 26040609 = 14120^2 + 5103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225415009 is a prime.

It is equal to p_12404368 and since 225415009 and 12404368 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (225415039) 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, 112707504 + 112707505.

It is an arithmetic number, because the mean of its divisors is an integer number (112707505).

Almost surely, 2^225415009 is an apocalyptic number.

It is an amenable number.

225415009 is a deficient number, since it is larger than the sum of its proper divisors (1).

225415009 is an equidigital number, since it uses as much as digits as its factorization.

225415009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 225415009 is about 15013.8272602292. The cubic root of 225415009 is about 608.5939207761.

The spelling of 225415009 in words is "two hundred twenty-five million, four hundred fifteen thousand, nine".