2265145 has 4 divisors (see below), whose sum is σ = 2718180. Its totient is φ = 1812112.

The previous prime is 2265143. The next prime is 2265149. The reversal of 2265145 is 5415622.

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 1784896 + 480249 = 1336^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265145 - 2¹ = 2265143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2265143) 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, 226510 + ... + 226519.

It is an arithmetic number, because the mean of its divisors is an integer number (679545).

2^2265145 is an apocalyptic number.

It is an amenable number.

2265145 is a deficient number, since it is larger than the sum of its proper divisors (453035).

2265145 is an equidigital number, since it uses as much as digits as its factorization.

2265145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453034.

The product of its digits is 2400, while the sum is 25.

The square root of 2265145 is about 1505.0398665816. The cubic root of 2265145 is about 131.3304208572.

The spelling of 2265145 in words is "two million, two hundred sixty-five thousand, one hundred forty-five".