2225212145 has 8 divisors (see below), whose sum is σ = 2875658856. Its totient is φ = 1643233536.

The previous prime is 2225212123. The next prime is 2225212163. The reversal of 2225212145 is 5412125222.

It can be written as a sum of positive squares in 4 ways, for example, as 115004176 + 2110207969 = 10724^2 + 45937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2225212145 - 2²⁰ = 2224163569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17116952 + ... + 17117081.

It is an arithmetic number, because the mean of its divisors is an integer number (359457357).

Almost surely, 2^2225212145 is an apocalyptic number.

It is an amenable number.

2225212145 is a deficient number, since it is larger than the sum of its proper divisors (650446711).

2225212145 is a wasteful number, since it uses less digits than its factorization.

2225212145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34234051.

The product of its digits is 3200, while the sum is 26.

The square root of 2225212145 is about 47172.1543391862. The cubic root of 2225212145 is about 1305.5408757010.

Adding to 2225212145 its reverse (5412125222), we get a palindrome (7637337367).

The spelling of 2225212145 in words is "two billion, two hundred twenty-five million, two hundred twelve thousand, one hundred forty-five".