225340212 has 24 divisors (see below), whose sum is σ = 540005536. Its totient is φ = 73083168.

The previous prime is 225340201. The next prime is 225340217. The reversal of 225340212 is 212043522.

It is a super-2 number, since 2×225340212² = 101556422288409888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225340217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253318 + ... + 254205.

Almost surely, 2^225340212 is an apocalyptic number.

It is an amenable number.

225340212 is an abundant number, since it is smaller than the sum of its proper divisors (314665324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225340212 is a wasteful number, since it uses less digits than its factorization.

225340212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507567 (or 507565 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 225340212 is about 15011.3361164155. The cubic root of 225340212 is about 608.5265989718.

Adding to 225340212 its reverse (212043522), we get a palindrome (437383734).

The spelling of 225340212 in words is "two hundred twenty-five million, three hundred forty thousand, two hundred twelve".