225245131 has 2 divisors, whose sum is σ = 225245132. Its totient is φ = 225245130.

The previous prime is 225245113. The next prime is 225245143. The reversal of 225245131 is 131542522.

Together with previous prime (225245113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225245131 - 2⁵ = 225245099 is a prime.

It is a super-2 number, since 2×225245131² = 101470738078414322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225245096 and 225245105.

It is not a weakly prime, because it can be changed into another prime (225245161) 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, 112622565 + 112622566.

It is an arithmetic number, because the mean of its divisors is an integer number (112622566).

Almost surely, 2^225245131 is an apocalyptic number.

225245131 is a deficient number, since it is larger than the sum of its proper divisors (1).

225245131 is an equidigital number, since it uses as much as digits as its factorization.

225245131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 225245131 is about 15008.1688090186. The cubic root of 225245131 is about 608.4409988375.

Adding to 225245131 its reverse (131542522), we get a palindrome (356787653).

The spelling of 225245131 in words is "two hundred twenty-five million, two hundred forty-five thousand, one hundred thirty-one".