2259505 has 4 divisors (see below), whose sum is σ = 2711412. Its totient is φ = 1807600.

The previous prime is 2259503. The next prime is 2259527. The reversal of 2259505 is 5059522.

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 1014049 + 1245456 = 1007^2 + 1116^2 .

It is not a de Polignac number, because 2259505 - 2¹ = 2259503 is a prime.

It is a Duffinian number.

2259505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2259503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225946 + ... + 225955.

It is an arithmetic number, because the mean of its divisors is an integer number (677853).

2^2259505 is an apocalyptic number.

It is an amenable number.

2259505 is a deficient number, since it is larger than the sum of its proper divisors (451907).

2259505 is an equidigital number, since it uses as much as digits as its factorization.

2259505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451906.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2259505 is about 1503.1649942704. The cubic root of 2259505 is about 131.2213300946.

It can be divided in two parts, 225 and 9505, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 2259505 in words is "two million, two hundred fifty-nine thousand, five hundred five".