2605101313 has 4 divisors (see below), whose sum is σ = 2608072660. Its totient is φ = 2602129968.

The previous prime is 2605101311. The next prime is 2605101341. The reversal of 2605101313 is 3131015062.

It is a happy number.

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 2355840369 + 249260944 = 48537^2 + 15788^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605101313 - 2¹ = 2605101311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605101311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484358 + ... + 1486111.

It is an arithmetic number, because the mean of its divisors is an integer number (652018165).

Almost surely, 2^2605101313 is an apocalyptic number.

It is an amenable number.

2605101313 is a deficient number, since it is larger than the sum of its proper divisors (2971347).

2605101313 is an equidigital number, since it uses as much as digits as its factorization.

2605101313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971346.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2605101313 is about 51040.1931128792. The cubic root of 2605101313 is about 1375.9675945093.

Adding to 2605101313 its reverse (3131015062), we get a palindrome (5736116375).

The spelling of 2605101313 in words is "two billion, six hundred five million, one hundred one thousand, three hundred thirteen".