8025881666 has 8 divisors (see below), whose sum is σ = 13133260944. Its totient is φ = 3648128020.

The previous prime is 8025881653. The next prime is 8025881701. The reversal of 8025881666 is 6661885208.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182406380 + ... + 182406423.

It is an arithmetic number, because the mean of its divisors is an integer number (1641657618).

Almost surely, 2^8025881666 is an apocalyptic number.

8025881666 is a deficient number, since it is larger than the sum of its proper divisors (5107379278).

8025881666 is a wasteful number, since it uses less digits than its factorization.

8025881666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364812816.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 8025881666 is about 89587.2851804317. The cubic root of 8025881666 is about 2002.1544837665.

The spelling of 8025881666 in words is "eight billion, twenty-five million, eight hundred eighty-one thousand, six hundred sixty-six".