8225666 has 8 divisors (see below), whose sum is σ = 12639564. Its totient is φ = 4012480.

The previous prime is 8225641. The next prime is 8225669. The reversal of 8225666 is 6665228.

It can be written as a sum of positive squares in 2 ways, for example, as 5900041 + 2325625 = 2429^2 + 1525^2 .

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

It is a super-2 number, since 2×8225666² = 135323162287112, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8225669) 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, 50075 + ... + 50238.

Almost surely, 2^8225666 is an apocalyptic number.

8225666 is a deficient number, since it is larger than the sum of its proper divisors (4413898).

8225666 is a wasteful number, since it uses less digits than its factorization.

8225666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100356.

The product of its digits is 34560, while the sum is 35.

The square root of 8225666 is about 2868.0421893689. The cubic root of 8225666 is about 201.8631396573.

The spelling of 8225666 in words is "eight million, two hundred twenty-five thousand, six hundred sixty-six".