2605260011 has 4 divisors (see below), whose sum is σ = 2625147624. Its totient is φ = 2585372400.

The previous prime is 2605259983. The next prime is 2605260029. The reversal of 2605260011 is 1100625062.

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

It is a cyclic number.

It is not a de Polignac number, because 2605260011 - 2³⁰ = 1531518187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605260311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9943610 + ... + 9943871.

It is an arithmetic number, because the mean of its divisors is an integer number (656286906).

Almost surely, 2^2605260011 is an apocalyptic number.

2605260011 is a deficient number, since it is larger than the sum of its proper divisors (19887613).

2605260011 is a wasteful number, since it uses less digits than its factorization.

2605260011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19887612.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2605260011 is about 51041.7477267384. The cubic root of 2605260011 is about 1375.9955344171.

Adding to 2605260011 its reverse (1100625062), we get a palindrome (3705885073).

The spelling of 2605260011 in words is "two billion, six hundred five million, two hundred sixty thousand, eleven".