225332440 has 16 divisors (see below), whose sum is σ = 506998080. Its totient is φ = 90132960.

The previous prime is 225332369. The next prime is 225332473. The reversal of 225332440 is 44233522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816616 + ... + 2816695.

It is an arithmetic number, because the mean of its divisors is an integer number (31687380).

Almost surely, 2^225332440 is an apocalyptic number.

225332440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225332440 is an abundant number, since it is smaller than the sum of its proper divisors (281665640).

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

225332440 is a wasteful number, since it uses less digits than its factorization.

225332440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633322 (or 5633318 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 225332440 is about 15011.0772431561. The cubic root of 225332440 is about 608.5196028494.

Adding to 225332440 its reverse (44233522), we get a palindrome (269565962).

The spelling of 225332440 in words is "two hundred twenty-five million, three hundred thirty-two thousand, four hundred forty".