2225165 has 4 divisors (see below), whose sum is σ = 2670204. Its totient is φ = 1780128.

The previous prime is 2225159. The next prime is 2225173. The reversal of 2225165 is 5615222.

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 1747684 + 477481 = 1322^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225165 - 2⁶ = 2225101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2225165.

It is a congruent 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, 222512 + ... + 222521.

It is an arithmetic number, because the mean of its divisors is an integer number (667551).

2^2225165 is an apocalyptic number.

It is an amenable number.

2225165 is a deficient number, since it is larger than the sum of its proper divisors (445039).

2225165 is an equidigital number, since it uses as much as digits as its factorization.

2225165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445038.

The product of its digits is 1200, while the sum is 23.

The square root of 2225165 is about 1491.6986961180. The cubic root of 2225165 is about 130.5531655582.

The spelling of 2225165 in words is "two million, two hundred twenty-five thousand, one hundred sixty-five".