225247312 has 30 divisors (see below), whose sum is σ = 445969658. Its totient is φ = 110210112.

The previous prime is 225247283. The next prime is 225247313. The reversal of 225247312 is 213742522.

It can be written as a sum of positive squares in only one way, i.e., 215032896 + 10214416 = 14664^2 + 3196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225247313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32158 + ... + 38530.

Almost surely, 2^225247312 is an apocalyptic number.

It is an amenable number.

225247312 is a deficient number, since it is larger than the sum of its proper divisors (220722346).

225247312 is an equidigital number, since it uses as much as digits as its factorization.

225247312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475 (or 6422 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 225247312 is about 15008.2414692728. The cubic root of 225247312 is about 608.4429626321.

Adding to 225247312 its reverse (213742522), we get a palindrome (438989834).

The spelling of 225247312 in words is "two hundred twenty-five million, two hundred forty-seven thousand, three hundred twelve".