225232040 has 32 divisors (see below), whose sum is σ = 552843360. Its totient is φ = 81902400.

The previous prime is 225231989. The next prime is 225232079. The reversal of 225232040 is 40232522.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255506 + ... + 256385.

It is an arithmetic number, because the mean of its divisors is an integer number (17276355).

Almost surely, 2^225232040 is an apocalyptic number.

225232040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225232040 is an abundant number, since it is smaller than the sum of its proper divisors (327611320).

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

225232040 is a wasteful number, since it uses less digits than its factorization.

225232040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511913 (or 511909 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 225232040 is about 15007.7326735253. The cubic root of 225232040 is about 608.4292113012.

Adding to 225232040 its reverse (40232522), we get a palindrome (265464562).

The spelling of 225232040 in words is "two hundred twenty-five million, two hundred thirty-two thousand, forty".