2225642 has 4 divisors (see below), whose sum is σ = 3338466. Its totient is φ = 1112820.

The previous prime is 2225627. The next prime is 2225647. The reversal of 2225642 is 2465222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2465222 = 2 ⋅1232611.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 373321 = 1361^2 + 611^2 .

It is not an unprimeable number, because it can be changed into a prime (2225647) by changing a digit.

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, 556409 + ... + 556412.

2^2225642 is an apocalyptic number.

2225642 is a deficient number, since it is larger than the sum of its proper divisors (1112824).

2225642 is a wasteful number, since it uses less digits than its factorization.

2225642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112823.

The product of its digits is 1920, while the sum is 23.

The square root of 2225642 is about 1491.8585723855. The cubic root of 2225642 is about 130.5624936172.

The spelling of 2225642 in words is "two million, two hundred twenty-five thousand, six hundred forty-two".