4253556665 has 8 divisors (see below), whose sum is σ = 5111745408. Its totient is φ = 3397860400.

The previous prime is 4253556649. The next prime is 4253556719. The reversal of 4253556665 is 5666553524.

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

It is not a de Polignac number, because 4253556665 - 2⁴ = 4253556649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619361 + ... + 626190.

It is an arithmetic number, because the mean of its divisors is an integer number (638968176).

Almost surely, 2^4253556665 is an apocalyptic number.

It is an amenable number.

4253556665 is a deficient number, since it is larger than the sum of its proper divisors (858188743).

4253556665 is a wasteful number, since it uses less digits than its factorization.

4253556665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246239.

The product of its digits is 3240000, while the sum is 47.

The square root of 4253556665 is about 65219.2967226725. The cubic root of 4253556665 is about 1620.2576261772.

The spelling of 4253556665 in words is "four billion, two hundred fifty-three million, five hundred fifty-six thousand, six hundred sixty-five".