223225447 has 4 divisors (see below), whose sum is σ = 223869096. Its totient is φ = 222581800.

The previous prime is 223225423. The next prime is 223225469. The reversal of 223225447 is 744522322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744522322 = 2 ⋅372261161.

It is a cyclic number.

It is not a de Polignac number, because 223225447 - 2¹⁵ = 223192679 is a prime.

It is a super-3 number, since 3×223225447³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223220447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321304 + ... + 321997.

It is an arithmetic number, because the mean of its divisors is an integer number (55967274).

Almost surely, 2^223225447 is an apocalyptic number.

223225447 is a deficient number, since it is larger than the sum of its proper divisors (643649).

223225447 is an equidigital number, since it uses as much as digits as its factorization.

223225447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643648.

The product of its digits is 26880, while the sum is 31.

The square root of 223225447 is about 14940.7311400748. The cubic root of 223225447 is about 606.6169862644.

Adding to 223225447 its reverse (744522322), we get a palindrome (967747769).

The spelling of 223225447 in words is "two hundred twenty-three million, two hundred twenty-five thousand, four hundred forty-seven".