2605530803 has 4 divisors (see below), whose sum is σ = 2634806520. Its totient is φ = 2576255088.

The previous prime is 2605530769. The next prime is 2605530833. The reversal of 2605530803 is 3080355062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3080355062 = 2 ⋅1540177531.

It is a cyclic number.

It is not a de Polignac number, because 2605530803 - 2⁸ = 2605530547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2605530803.

It is not an unprimeable number, because it can be changed into a prime (2605530833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14637725 + ... + 14637902.

It is an arithmetic number, because the mean of its divisors is an integer number (658701630).

Almost surely, 2^2605530803 is an apocalyptic number.

2605530803 is a deficient number, since it is larger than the sum of its proper divisors (29275717).

2605530803 is an equidigital number, since it uses as much as digits as its factorization.

2605530803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29275716.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2605530803 is about 51044.4003099263. The cubic root of 2605530803 is about 1376.0432066485.

Adding to 2605530803 its reverse (3080355062), we get a palindrome (5685885865).

The spelling of 2605530803 in words is "two billion, six hundred five million, five hundred thirty thousand, eight hundred three".