2605505516 has 24 divisors (see below), whose sum is σ = 4716594960. Its totient is φ = 1258414272.

The previous prime is 2605505509. The next prime is 2605505519. The reversal of 2605505516 is 6155055062.

It is not an unprimeable number, because it can be changed into a prime (2605505519) 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 7 ways as a sum of consecutive naturals, for example, 42755 + ... + 83898.

It is an arithmetic number, because the mean of its divisors is an integer number (196524790).

Almost surely, 2^2605505516 is an apocalyptic number.

It is an amenable number.

2605505516 is a deficient number, since it is larger than the sum of its proper divisors (2111089444).

2605505516 is a wasteful number, since it uses less digits than its factorization.

2605505516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126833 (or 126831 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 2605505516 is about 51044.1526132034. The cubic root of 2605505516 is about 1376.0387550773.

The spelling of 2605505516 in words is "two billion, six hundred five million, five hundred five thousand, five hundred sixteen".