225425513 has 2 divisors, whose sum is σ = 225425514. Its totient is φ = 225425512.

The previous prime is 225425471. The next prime is 225425531. The reversal of 225425513 is 315524522.

Together with next prime (225425531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225390169 + 35344 = 15013^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 225425513 - 2¹⁰ = 225424489 is a prime.

It is a super-2 number, since 2×225425513² = 101633323822626338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225425573) 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, 112712756 + 112712757.

It is an arithmetic number, because the mean of its divisors is an integer number (112712757).

Almost surely, 2^225425513 is an apocalyptic number.

It is an amenable number.

225425513 is a deficient number, since it is larger than the sum of its proper divisors (1).

225425513 is an equidigital number, since it uses as much as digits as its factorization.

225425513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 225425513 is about 15014.1770670257. The cubic root of 225425513 is about 608.6033738160.

Subtracting 225425513 from its reverse (315524522), we obtain a palindrome (90099009).

The spelling of 225425513 in words is "two hundred twenty-five million, four hundred twenty-five thousand, five hundred thirteen".