225400213 has 2 divisors, whose sum is σ = 225400214. Its totient is φ = 225400212.

The previous prime is 225400199. The next prime is 225400223. The reversal of 225400213 is 312004522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 103673124 = 11033^2 + 10182^2 .

It is a cyclic number.

It is not a de Polignac number, because 225400213 - 2⁵ = 225400181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225400223) 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, 112700106 + 112700107.

It is an arithmetic number, because the mean of its divisors is an integer number (112700107).

Almost surely, 2^225400213 is an apocalyptic number.

It is an amenable number.

225400213 is a deficient number, since it is larger than the sum of its proper divisors (1).

225400213 is an equidigital number, since it uses as much as digits as its factorization.

225400213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225400213 is about 15013.3345063647. The cubic root of 225400213 is about 608.5806046668.

Adding to 225400213 its reverse (312004522), we get a palindrome (537404735).

The spelling of 225400213 in words is "two hundred twenty-five million, four hundred thousand, two hundred thirteen".