2225018 has 4 divisors (see below), whose sum is σ = 3337530. Its totient is φ = 1112508.

The previous prime is 2225009. The next prime is 2225021. The reversal of 2225018 is 8105222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8105222 = 2 ⋅4052611.

It can be written as a sum of positive squares in only one way, i.e., 1885129 + 339889 = 1373^2 + 583^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556253 + ... + 556256.

2^2225018 is an apocalyptic number.

2225018 is a deficient number, since it is larger than the sum of its proper divisors (1112512).

2225018 is a wasteful number, since it uses less digits than its factorization.

2225018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112511.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2225018 is about 1491.6494226191. The cubic root of 2225018 is about 130.5502906047.

The spelling of 2225018 in words is "two million, two hundred twenty-five thousand, eighteen".