2225851165 has 4 divisors (see below), whose sum is σ = 2671021404. Its totient is φ = 1780680928.

The previous prime is 2225851163. The next prime is 2225851171. The reversal of 2225851165 is 5611585222.

2225851165 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 can be written as a sum of positive squares in 2 ways, for example, as 1721669049 + 504182116 = 41493^2 + 22454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225851165 - 2¹ = 2225851163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225851163) 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, 222585112 + ... + 222585121.

It is an arithmetic number, because the mean of its divisors is an integer number (667755351).

Almost surely, 2^2225851165 is an apocalyptic number.

It is an amenable number.

2225851165 is a deficient number, since it is larger than the sum of its proper divisors (445170239).

2225851165 is an equidigital number, since it uses as much as digits as its factorization.

2225851165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445170238.

The product of its digits is 48000, while the sum is 37.

The square root of 2225851165 is about 47178.9271285391. The cubic root of 2225851165 is about 1305.6658356043.

The spelling of 2225851165 in words is "two billion, two hundred twenty-five million, eight hundred fifty-one thousand, one hundred sixty-five".