225947 has 4 divisors (see below), whose sum is σ = 239256. Its totient is φ = 212640.

The previous prime is 225943. The next prime is 225949. The reversal of 225947 is 749522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749522 = 2 ⋅374761.

It is a cyclic number.

It is not a de Polignac number, because 225947 - 2² = 225943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6629 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (59814).

2²²⁵⁹⁴⁷ is an apocalyptic number.

225947 is a deficient number, since it is larger than the sum of its proper divisors (13309).

225947 is a wasteful number, since it uses less digits than its factorization.

225947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13308.

The product of its digits is 5040, while the sum is 29.

The square root of 225947 is about 475.3388265227. The cubic root of 225947 is about 60.9072315599.

The spelling of 225947 in words is "two hundred twenty-five thousand, nine hundred forty-seven".