225724271666 has 16 divisors (see below), whose sum is σ = 352314728064. Its totient is φ = 108376645104.

The previous prime is 225724271639. The next prime is 225724271671. The reversal of 225724271666 is 666172427522.

It is an unprimeable number.

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, 22649000 + ... + 22658963.

It is an arithmetic number, because the mean of its divisors is an integer number (22019670504).

Almost surely, 2^225724271666 is an apocalyptic number.

225724271666 is a deficient number, since it is larger than the sum of its proper divisors (126590456398).

225724271666 is a wasteful number, since it uses less digits than its factorization.

225724271666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45308065.

The product of its digits is 3386880, while the sum is 50.

The spelling of 225724271666 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred seventy-one thousand, six hundred sixty-six".