2265905 has 4 divisors (see below), whose sum is σ = 2719092. Its totient is φ = 1812720.

The previous prime is 2265899. The next prime is 2265911. The reversal of 2265905 is 5095622.

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

It is an interprime number because it is at equal distance from previous prime (2265899) and next prime (2265911).

It can be written as a sum of positive squares in 2 ways, for example, as 583696 + 1682209 = 764^2 + 1297^2 .

It is not a de Polignac number, because 2265905 - 2⁶ = 2265841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226586 + ... + 226595.

It is an arithmetic number, because the mean of its divisors is an integer number (679773).

2^2265905 is an apocalyptic number.

It is an amenable number.

2265905 is a deficient number, since it is larger than the sum of its proper divisors (453187).

2265905 is an equidigital number, since it uses as much as digits as its factorization.

2265905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453186.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2265905 is about 1505.2923304129. The cubic root of 2265905 is about 131.3451071811.

The spelling of 2265905 in words is "two million, two hundred sixty-five thousand, nine hundred five".