2265985205 has 16 divisors (see below), whose sum is σ = 2970480384. Its totient is φ = 1645711680.

The previous prime is 2265985187. The next prime is 2265985217. The reversal of 2265985205 is 5025895622.

It is not a de Polignac number, because 2265985205 - 2¹⁰ = 2265984181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 12212 + ... + 68418.

It is an arithmetic number, because the mean of its divisors is an integer number (185655024).

Almost surely, 2^2265985205 is an apocalyptic number.

It is an amenable number.

2265985205 is a deficient number, since it is larger than the sum of its proper divisors (704495179).

2265985205 is a wasteful number, since it uses less digits than its factorization.

2265985205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56956.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 2265985205 is about 47602.3655399603. The cubic root of 2265985205 is about 1313.4665687978.

The spelling of 2265985205 in words is "two billion, two hundred sixty-five million, nine hundred eighty-five thousand, two hundred five".