225746947 has 4 divisors (see below), whose sum is σ = 230996920. Its totient is φ = 220496976.

The previous prime is 225746887. The next prime is 225746951. The reversal of 225746947 is 749647522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225746947 - 2¹⁹ = 225222659 is a prime.

It is a super-3 number, since 3×225746947³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225746897 and 225746906.

It is not an unprimeable number, because it can be changed into a prime (225746047) 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, 2624922 + ... + 2625007.

It is an arithmetic number, because the mean of its divisors is an integer number (57749230).

Almost surely, 2^225746947 is an apocalyptic number.

225746947 is a deficient number, since it is larger than the sum of its proper divisors (5249973).

225746947 is an equidigital number, since it uses as much as digits as its factorization.

225746947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249972.

The product of its digits is 846720, while the sum is 46.

The square root of 225746947 is about 15024.8776034948. The cubic root of 225746947 is about 608.8925054039.

The spelling of 225746947 in words is "two hundred twenty-five million, seven hundred forty-six thousand, nine hundred forty-seven".