8254218665 has 16 divisors (see below), whose sum is σ = 12349169280. Its totient is φ = 5145486720.

The previous prime is 8254218629. The next prime is 8254218673. The reversal of 8254218665 is 5668124528.

It is not a de Polignac number, because 8254218665 - 2⁶ = 8254218601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10719380 + ... + 10720149.

It is an arithmetic number, because the mean of its divisors is an integer number (771823080).

Almost surely, 2^8254218665 is an apocalyptic number.

It is an amenable number.

8254218665 is a deficient number, since it is larger than the sum of its proper divisors (4094950615).

8254218665 is a wasteful number, since it uses less digits than its factorization.

8254218665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21439552.

The product of its digits is 921600, while the sum is 47.

The square root of 8254218665 is about 90852.7306414067. The cubic root of 8254218665 is about 2020.9643685474.

The spelling of 8254218665 in words is "eight billion, two hundred fifty-four million, two hundred eighteen thousand, six hundred sixty-five".