225447317 has 4 divisors (see below), whose sum is σ = 227442540. Its totient is φ = 223452096.

The previous prime is 225447289. The next prime is 225447349. The reversal of 225447317 is 713744522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 713744522 = 2 ⋅356872261.

It can be written as a sum of positive squares in 2 ways, for example, as 1825201 + 223622116 = 1351^2 + 14954^2 .

It is a cyclic number.

It is not a de Polignac number, because 225447317 - 2¹⁰ = 225446293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225447367) 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 in 3 ways as a sum of consecutive naturals, for example, 997442 + ... + 997667.

It is an arithmetic number, because the mean of its divisors is an integer number (56860635).

Almost surely, 2^225447317 is an apocalyptic number.

It is an amenable number.

225447317 is a deficient number, since it is larger than the sum of its proper divisors (1995223).

225447317 is a wasteful number, since it uses less digits than its factorization.

225447317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995222.

The product of its digits is 47040, while the sum is 35.

The square root of 225447317 is about 15014.9031631909. The cubic root of 225447317 is about 608.6229953161.

The spelling of 225447317 in words is "two hundred twenty-five million, four hundred forty-seven thousand, three hundred seventeen".