225436947 has 8 divisors (see below), whose sum is σ = 300974544. Its totient is φ = 150095328.

The previous prime is 225436933. The next prime is 225436963. The reversal of 225436947 is 749634522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225436947 - 2¹¹ = 225434899 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 225436899 and 225436908.

It is not an unprimeable number, because it can be changed into a prime (225436997) 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 7 ways as a sum of consecutive naturals, for example, 46288 + ... + 50925.

It is an arithmetic number, because the mean of its divisors is an integer number (37621818).

Almost surely, 2^225436947 is an apocalyptic number.

225436947 is a deficient number, since it is larger than the sum of its proper divisors (75537597).

225436947 is an equidigital number, since it uses as much as digits as its factorization.

225436947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97989.

The product of its digits is 362880, while the sum is 42.

The square root of 225436947 is about 15014.5578356474. The cubic root of 225436947 is about 608.6136634726.

The spelling of 225436947 in words is "two hundred twenty-five million, four hundred thirty-six thousand, nine hundred forty-seven".