2265090845 has 4 divisors (see below), whose sum is σ = 2718109020. Its totient is φ = 1812072672.

The previous prime is 2265090823. The next prime is 2265090859. The reversal of 2265090845 is 5480905622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 506295001 + 1758795844 = 22501^2 + 41938^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265090845 - 2¹⁰ = 2265089821 is a prime.

It is a super-2 number, since 2×2265090845² = 10261273072205628050, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 226509080 + ... + 226509089.

It is an arithmetic number, because the mean of its divisors is an integer number (679527255).

Almost surely, 2^2265090845 is an apocalyptic number.

It is an amenable number.

2265090845 is a deficient number, since it is larger than the sum of its proper divisors (453018175).

2265090845 is an equidigital number, since it uses as much as digits as its factorization.

2265090845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453018174.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 2265090845 is about 47592.9705418773. The cubic root of 2265090845 is about 1313.2937423468.

The spelling of 2265090845 in words is "two billion, two hundred sixty-five million, ninety thousand, eight hundred forty-five".