2605555465 has 16 divisors (see below), whose sum is σ = 3169191168. Its totient is φ = 2056251456.

The previous prime is 2605555457. The next prime is 2605555499. The reversal of 2605555465 is 5645555062.

It is a cyclic number.

It is not a de Polignac number, because 2605555465 - 2³ = 2605555457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 125827 + ... + 145063.

It is an arithmetic number, because the mean of its divisors is an integer number (198074448).

Almost surely, 2^2605555465 is an apocalyptic number.

It is an amenable number.

2605555465 is a deficient number, since it is larger than the sum of its proper divisors (563635703).

2605555465 is a wasteful number, since it uses less digits than its factorization.

2605555465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19608.

The product of its (nonzero) digits is 900000, while the sum is 43.

The square root of 2605555465 is about 51044.6418833554. The cubic root of 2605555465 is about 1376.0475481657.

The spelling of 2605555465 in words is "two billion, six hundred five million, five hundred fifty-five thousand, four hundred sixty-five".