225166671 has 24 divisors (see below), whose sum is σ = 336527360. Its totient is φ = 144925200.

The previous prime is 225166651. The next prime is 225166681. The reversal of 225166671 is 176661522.

It is a happy number.

It is not a de Polignac number, because 225166671 - 2⁶ = 225166607 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225166621) 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 23 ways as a sum of consecutive naturals, for example, 175410 + ... + 176688.

Almost surely, 2^225166671 is an apocalyptic number.

225166671 is a deficient number, since it is larger than the sum of its proper divisors (111360689).

225166671 is a wasteful number, since it uses less digits than its factorization.

225166671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947 (or 1944 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 225166671 is about 15005.5546715208. The cubic root of 225166671 is about 608.3703442214.

The spelling of 225166671 in words is "two hundred twenty-five million, one hundred sixty-six thousand, six hundred seventy-one".