22225742 has 16 divisors (see below), whose sum is σ = 41565312. Its totient is φ = 8659320.

The previous prime is 22225739. The next prime is 22225747. The reversal of 22225742 is 24752222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72008 + ... + 72315.

It is an arithmetic number, because the mean of its divisors is an integer number (2597832).

Almost surely, 2^22225742 is an apocalyptic number.

22225742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22225742 is a deficient number, since it is larger than the sum of its proper divisors (19339570).

22225742 is a wasteful number, since it uses less digits than its factorization.

22225742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144343.

The product of its digits is 4480, while the sum is 26.

The square root of 22225742 is about 4714.4185219388. The cubic root of 22225742 is about 281.1590644614.

Adding to 22225742 its reverse (24752222), we get a palindrome (46977964).

The spelling of 22225742 in words is "twenty-two million, two hundred twenty-five thousand, seven hundred forty-two".