225381472 has 12 divisors (see below), whose sum is σ = 443719836. Its totient is φ = 112690720.

The previous prime is 225381463. The next prime is 225381473. The reversal of 225381472 is 274183522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225381473) by changing a digit.

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 as a sum of consecutive naturals, namely, 3521554 + ... + 3521617.

It is an arithmetic number, because the mean of its divisors is an integer number (36976653).

Almost surely, 2^225381472 is an apocalyptic number.

It is an amenable number.

225381472 is a deficient number, since it is larger than the sum of its proper divisors (218338364).

225381472 is an equidigital number, since it uses as much as digits as its factorization.

225381472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043181 (or 7043173 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 225381472 is about 15012.7103482349. The cubic root of 225381472 is about 608.5637372985.

The spelling of 225381472 in words is "two hundred twenty-five million, three hundred eighty-one thousand, four hundred seventy-two".