225005213 has 2 divisors, whose sum is σ = 225005214. Its totient is φ = 225005212.

The previous prime is 225005191. The next prime is 225005227. The reversal of 225005213 is 312500522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222994489 + 2010724 = 14933^2 + 1418^2 .

It is a cyclic number.

It is not a de Polignac number, because 225005213 - 2¹⁶ = 224939677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225005233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112502606 + 112502607.

It is an arithmetic number, because the mean of its divisors is an integer number (112502607).

Almost surely, 2^225005213 is an apocalyptic number.

It is an amenable number.

225005213 is a deficient number, since it is larger than the sum of its proper divisors (1).

225005213 is an equidigital number, since it uses as much as digits as its factorization.

225005213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 225005213 is about 15000.1737656602. The cubic root of 225005213 is about 608.2248967831.

Adding to 225005213 its reverse (312500522), we get a palindrome (537505735).

The spelling of 225005213 in words is "two hundred twenty-five million, five thousand, two hundred thirteen".