225541331 has 2 divisors, whose sum is σ = 225541332. Its totient is φ = 225541330.

The previous prime is 225541313. The next prime is 225541357. The reversal of 225541331 is 133145522.

It is a happy number.

Together with previous prime (225541313) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (225541357) can be obtained adding 225541331 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225541331 - 2¹⁰ = 225540307 is a prime.

It is a super-2 number, since 2×225541331² = 101737783978503122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225541331.

It is not a weakly prime, because it can be changed into another prime (225541361) 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, 112770665 + 112770666.

It is an arithmetic number, because the mean of its divisors is an integer number (112770666).

Almost surely, 2^225541331 is an apocalyptic number.

225541331 is a deficient number, since it is larger than the sum of its proper divisors (1).

225541331 is an equidigital number, since it uses as much as digits as its factorization.

225541331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 225541331 is about 15018.0335263975. The cubic root of 225541331 is about 608.7075843769.

Adding to 225541331 its reverse (133145522), we get a palindrome (358686853).

The spelling of 225541331 in words is "two hundred twenty-five million, five hundred forty-one thousand, three hundred thirty-one".