225328237 has 2 divisors, whose sum is σ = 225328238. Its totient is φ = 225328236.

The previous prime is 225328177. The next prime is 225328241. The reversal of 225328237 is 732823522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153908836 + 71419401 = 12406^2 + 8451^2 .

It is a cyclic number.

It is not a de Polignac number, because 225328237 - 2²³ = 216939629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225328837) 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, 112664118 + 112664119.

It is an arithmetic number, because the mean of its divisors is an integer number (112664119).

Almost surely, 2^225328237 is an apocalyptic number.

It is an amenable number.

225328237 is a deficient number, since it is larger than the sum of its proper divisors (1).

225328237 is an equidigital number, since it uses as much as digits as its factorization.

225328237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 225328237 is about 15010.9372458884. The cubic root of 225328237 is about 608.5158193673.

The spelling of 225328237 in words is "two hundred twenty-five million, three hundred twenty-eight thousand, two hundred thirty-seven".