225313237 has 2 divisors, whose sum is σ = 225313238. Its totient is φ = 225313236.

The previous prime is 225313219. The next prime is 225313241. The reversal of 225313237 is 732313522.

225313237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173343556 + 51969681 = 13166^2 + 7209^2 .

It is a cyclic number.

It is not a de Polignac number, because 225313237 - 2²³ = 216924629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225313337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112656618 + 112656619.

It is an arithmetic number, because the mean of its divisors is an integer number (112656619).

Almost surely, 2^225313237 is an apocalyptic number.

It is an amenable number.

225313237 is a deficient number, since it is larger than the sum of its proper divisors (1).

225313237 is an equidigital number, since it uses as much as digits as its factorization.

225313237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 28.

The square root of 225313237 is about 15010.4376018822. The cubic root of 225313237 is about 608.5023161923.

Adding to 225313237 its reverse (732313522), we get a palindrome (957626759).

The spelling of 225313237 in words is "two hundred twenty-five million, three hundred thirteen thousand, two hundred thirty-seven".