2566240205 has 8 divisors (see below), whose sum is σ = 3085402104. Its totient is φ = 2049049600.

The previous prime is 2566240199. The next prime is 2566240213. The reversal of 2566240205 is 5020426652.

It can be written as a sum of positive squares in 4 ways, for example, as 3147076 + 2563093129 = 1774^2 + 50627^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-2566240205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489956 + ... + 495165.

It is an arithmetic number, because the mean of its divisors is an integer number (385675263).

Almost surely, 2^2566240205 is an apocalyptic number.

It is an amenable number.

2566240205 is a deficient number, since it is larger than the sum of its proper divisors (519161899).

2566240205 is an equidigital number, since it uses as much as digits as its factorization.

2566240205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985647.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2566240205 is about 50658.0714694115. The cubic root of 2566240205 is about 1369.0913763025.

Adding to 2566240205 its reverse (5020426652), we get a palindrome (7586666857).

The spelling of 2566240205 in words is "two billion, five hundred sixty-six million, two hundred forty thousand, two hundred five".