2605000065 has 16 divisors (see below), whose sum is σ = 4206955968. Its totient is φ = 1376348096.

The previous prime is 2605000043. The next prime is 2605000093. The reversal of 2605000065 is 5600005062.

It is a cyclic number.

It is not a de Polignac number, because 2605000065 - 2²⁶ = 2537891201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2604999999 and 2605000044.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 809922 + ... + 813131.

It is an arithmetic number, because the mean of its divisors is an integer number (262934748).

Almost surely, 2^2605000065 is an apocalyptic number.

It is an amenable number.

2605000065 is a deficient number, since it is larger than the sum of its proper divisors (1601955903).

2605000065 is a wasteful number, since it uses less digits than its factorization.

2605000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623168.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2605000065 is about 51039.2012574648. The cubic root of 2605000065 is about 1375.9497684884.

The spelling of 2605000065 in words is "two billion, six hundred five million, sixty-five", and thus it is an aban number.