2185564265 has 16 divisors (see below), whose sum is σ = 2726784000. Its totient is φ = 1679654592.

The previous prime is 2185564247. The next prime is 2185564289. The reversal of 2185564265 is 5624655812.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2185564265 - 2¹⁰ = 2185563241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9017 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (170424000).

Almost surely, 2^2185564265 is an apocalyptic number.

It is an amenable number.

2185564265 is a deficient number, since it is larger than the sum of its proper divisors (541219735).

2185564265 is a wasteful number, since it uses less digits than its factorization.

2185564265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75976.

The product of its digits is 576000, while the sum is 44.

The square root of 2185564265 is about 46750.0188770015. The cubic root of 2185564265 is about 1297.7405060780.

The spelling of 2185564265 in words is "two billion, one hundred eighty-five million, five hundred sixty-four thousand, two hundred sixty-five".