5223255666 has 16 divisors (see below), whose sum is σ = 10689453984. Its totient is φ = 1700594784.

The previous prime is 5223255649. The next prime is 5223255707. The reversal of 5223255666 is 6665523225.

It is a super-2 number, since 2×5223255666² = 54564799504802207112, which contains 22 as substring.

It is a Curzon number.

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, 10122331 + ... + 10122846.

It is an arithmetic number, because the mean of its divisors is an integer number (668090874).

Almost surely, 2^5223255666 is an apocalyptic number.

5223255666 is an abundant number, since it is smaller than the sum of its proper divisors (5466198318).

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

5223255666 is a wasteful number, since it uses less digits than its factorization.

5223255666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20245225.

The product of its digits is 648000, while the sum is 42.

The square root of 5223255666 is about 72272.0946562364. The cubic root of 5223255666 is about 1735.0570581993.

The spelling of 5223255666 in words is "five billion, two hundred twenty-three million, two hundred fifty-five thousand, six hundred sixty-six".