20225242 has 16 divisors (see below), whose sum is σ = 30785472. Its totient is φ = 9964800.

The previous prime is 20225213. The next prime is 20225243. The reversal of 20225242 is 24252202.

It is not an unprimeable number, because it can be changed into a prime (20225243) 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 in 7 ways as a sum of consecutive naturals, for example, 58113 + ... + 58459.

It is an arithmetic number, because the mean of its divisors is an integer number (1924092).

Almost surely, 2^20225242 is an apocalyptic number.

20225242 is a deficient number, since it is larger than the sum of its proper divisors (10560230).

20225242 is a wasteful number, since it uses less digits than its factorization.

20225242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20225242 is about 4497.2482697756. The cubic root of 20225242 is about 272.4569614715.

Adding to 20225242 its reverse (24252202), we get a palindrome (44477444).

The spelling of 20225242 in words is "twenty million, two hundred twenty-five thousand, two hundred forty-two".