225131252 has 12 divisors (see below), whose sum is σ = 396624900. Its totient is φ = 111809856.

The previous prime is 225131251. The next prime is 225131293. The reversal of 225131252 is 252131522.

225131252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 25361296 + 199769956 = 5036^2 + 14134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225131251) 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 in 3 ways as a sum of consecutive naturals, for example, 188273 + ... + 189464.

It is an arithmetic number, because the mean of its divisors is an integer number (33052075).

Almost surely, 2^225131252 is an apocalyptic number.

It is an amenable number.

225131252 is a deficient number, since it is larger than the sum of its proper divisors (171493648).

225131252 is a wasteful number, since it uses less digits than its factorization.

225131252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377890 (or 377888 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 225131252 is about 15004.3744288124. The cubic root of 225131252 is about 608.3384434090.

Adding to 225131252 its reverse (252131522), we get a palindrome (477262774).

The spelling of 225131252 in words is "two hundred twenty-five million, one hundred thirty-one thousand, two hundred fifty-two".