2565424205 has 4 divisors (see below), whose sum is σ = 3078509052. Its totient is φ = 2052339360.

The previous prime is 2565424157. The next prime is 2565424223. The reversal of 2565424205 is 5024245652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 486246601 + 2079177604 = 22051^2 + 45598^2 .

It is not a de Polignac number, because 2565424205 - 2¹⁰ = 2565423181 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 3 ways as a sum of consecutive naturals, for example, 256542416 + ... + 256542425.

It is an arithmetic number, because the mean of its divisors is an integer number (769627263).

Almost surely, 2^2565424205 is an apocalyptic number.

It is an amenable number.

2565424205 is a deficient number, since it is larger than the sum of its proper divisors (513084847).

2565424205 is an equidigital number, since it uses as much as digits as its factorization.

2565424205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513084846.

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 2565424205 is about 50650.0168311917. The cubic root of 2565424205 is about 1368.9462486830.

Adding to 2565424205 its reverse (5024245652), we get a palindrome (7589669857).

The spelling of 2565424205 in words is "two billion, five hundred sixty-five million, four hundred twenty-four thousand, two hundred five".