225065166 has 32 divisors (see below), whose sum is σ = 470741760. Its totient is φ = 71736632.

The previous prime is 225065161. The next prime is 225065179. The reversal of 225065166 is 661560522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225065161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71461 + ... + 74543.

It is an arithmetic number, because the mean of its divisors is an integer number (14710680).

Almost surely, 2^225065166 is an apocalyptic number.

225065166 is an abundant number, since it is smaller than the sum of its proper divisors (245676594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225065166 is an equidigital number, since it uses as much as digits as its factorization.

225065166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 225065166 is about 15002.1720427410. The cubic root of 225065166 is about 608.2789128191.

It can be divided in two parts, 22506 and 5166, that added together give a palindrome (27672).

The spelling of 225065166 in words is "two hundred twenty-five million, sixty-five thousand, one hundred sixty-six".