225090388 has 24 divisors (see below), whose sum is σ = 405844712. Its totient is φ = 109154304.

The previous prime is 225090263. The next prime is 225090389. The reversal of 225090388 is 883090522.

It can be written as a sum of positive squares in 4 ways, for example, as 3139984 + 221950404 = 1772^2 + 14898^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225090389) 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, 47620 + ... + 52132.

Almost surely, 2^225090388 is an apocalyptic number.

It is an amenable number.

225090388 is a deficient number, since it is larger than the sum of its proper divisors (180754324).

225090388 is a wasteful number, since it uses less digits than its factorization.

225090388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891 (or 4889 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 225090388 is about 15003.0126308019. The cubic root of 225090388 is about 608.3016342941.

The spelling of 225090388 in words is "two hundred twenty-five million, ninety thousand, three hundred eighty-eight".