2265999 has 4 divisors (see below), whose sum is σ = 3021336. Its totient is φ = 1510664.

The previous prime is 2265979. The next prime is 2266003. The reversal of 2265999 is 9995622.

2265999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2265999 - 2¹⁷ = 2134927 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2265999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377664 + ... + 377669.

It is an arithmetic number, because the mean of its divisors is an integer number (755334).

2^2265999 is an apocalyptic number.

2265999 is a deficient number, since it is larger than the sum of its proper divisors (755337).

2265999 is an equidigital number, since it uses as much as digits as its factorization.

2265999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755336.

The product of its digits is 87480, while the sum is 42.

The square root of 2265999 is about 1505.3235532602. The cubic root of 2265999 is about 131.3469234192.

The spelling of 2265999 in words is "two million, two hundred sixty-five thousand, nine hundred ninety-nine".