225212422 has 8 divisors (see below), whose sum is σ = 337956696. Its totient is φ = 112560192.

The previous prime is 225212417. The next prime is 225212443. The reversal of 225212422 is 224212522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 225212393 and 225212402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16528 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (42244587).

Almost surely, 2^225212422 is an apocalyptic number.

225212422 is a deficient number, since it is larger than the sum of its proper divisors (112744274).

225212422 is a wasteful number, since it uses less digits than its factorization.

225212422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46022.

The product of its digits is 1280, while the sum is 22.

The square root of 225212422 is about 15007.0790628956. The cubic root of 225212422 is about 608.4115457997.

Adding to 225212422 its reverse (224212522), we get a palindrome (449424944).

The spelling of 225212422 in words is "two hundred twenty-five million, two hundred twelve thousand, four hundred twenty-two".