225271213 has 4 divisors (see below), whose sum is σ = 227985408. Its totient is φ = 222557020.

The previous prime is 225271187. The next prime is 225271243. The reversal of 225271213 is 312172522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225271213 - 2⁵ = 225271181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225271243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1356973 + ... + 1357138.

It is an arithmetic number, because the mean of its divisors is an integer number (56996352).

Almost surely, 2^225271213 is an apocalyptic number.

It is an amenable number.

225271213 is a deficient number, since it is larger than the sum of its proper divisors (2714195).

225271213 is an equidigital number, since it uses as much as digits as its factorization.

225271213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714194.

The product of its digits is 1680, while the sum is 25.

The square root of 225271213 is about 15009.0377106595. The cubic root of 225271213 is about 608.4644825055.

The spelling of 225271213 in words is "two hundred twenty-five million, two hundred seventy-one thousand, two hundred thirteen".