2566440205 has 8 divisors (see below), whose sum is σ = 3519689472. Its totient is φ = 1759844688.

The previous prime is 2566440193. The next prime is 2566440209. The reversal of 2566440205 is 5020446652.

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

It is not a de Polignac number, because 2566440205 - 2⁹ = 2566439693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566440209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36663397 + ... + 36663466.

It is an arithmetic number, because the mean of its divisors is an integer number (439961184).

Almost surely, 2^2566440205 is an apocalyptic number.

It is an amenable number.

2566440205 is a deficient number, since it is larger than the sum of its proper divisors (953249267).

2566440205 is an equidigital number, since it uses as much as digits as its factorization.

2566440205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73326875.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2566440205 is about 50660.0454500388. The cubic root of 2566440205 is about 1369.1269421031.

Adding to 2566440205 its reverse (5020446652), we get a palindrome (7586886857).

The spelling of 2566440205 in words is "two billion, five hundred sixty-six million, four hundred forty thousand, two hundred five".