225287447 has 48 divisors (see below), whose sum is σ = 300303360. Its totient is φ = 166924800.

The previous prime is 225287437. The next prime is 225287477. The reversal of 225287447 is 744782522.

It is not a de Polignac number, because 225287447 - 2¹⁰ = 225286423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225287437) 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 47 ways as a sum of consecutive naturals, for example, 1620704 + ... + 1620842.

It is an arithmetic number, because the mean of its divisors is an integer number (6256320).

Almost surely, 2^225287447 is an apocalyptic number.

225287447 is a deficient number, since it is larger than the sum of its proper divisors (75015913).

225287447 is a wasteful number, since it uses less digits than its factorization.

225287447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 285 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 225287447 is about 15009.5785084059. The cubic root of 225287447 is about 608.4790983324.

The spelling of 225287447 in words is "two hundred twenty-five million, two hundred eighty-seven thousand, four hundred forty-seven".