226525613 has 2 divisors, whose sum is σ = 226525614. Its totient is φ = 226525612.

The previous prime is 226525609. The next prime is 226525631. The reversal of 226525613 is 316525622.

226525613 = 10642² + 10643².

Together with next prime (226525631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113273449 + 113252164 = 10643^2 + 10642^2 .

It is a cyclic number.

It is not a de Polignac number, because 226525613 - 2² = 226525609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226525613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226525633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113262806 + 113262807.

It is an arithmetic number, because the mean of its divisors is an integer number (113262807).

Almost surely, 2^226525613 is an apocalyptic number.

226525613 is the 10643-rd centered square number.

It is an amenable number.

226525613 is a deficient number, since it is larger than the sum of its proper divisors (1).

226525613 is an equidigital number, since it uses as much as digits as its factorization.

226525613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 226525613 is about 15050.7678541661. The cubic root of 226525613 is about 609.5917836744.

Subtracting 226525613 from its reverse (316525622), we obtain a palindrome (90000009).

The spelling of 226525613 in words is "two hundred twenty-six million, five hundred twenty-five thousand, six hundred thirteen".