22116425 has 12 divisors (see below), whose sum is σ = 28094556. Its totient is φ = 17260800.

The previous prime is 22116397. The next prime is 22116431. The reversal of 22116425 is 52461122.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1149184 + 20967241 = 1072^2 + 4579^2 .

It is not a de Polignac number, because 22116425 - 2¹⁴ = 22100041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22116425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9764 + ... + 11813.

It is an arithmetic number, because the mean of its divisors is an integer number (2341213).

Almost surely, 2^22116425 is an apocalyptic number.

22116425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22116425 is a deficient number, since it is larger than the sum of its proper divisors (5978131).

22116425 is a wasteful number, since it uses less digits than its factorization.

22116425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21628 (or 21623 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 22116425 is about 4702.8103300048. The cubic root of 22116425 is about 280.6973476790.

Adding to 22116425 its reverse (52461122), we get a palindrome (74577547).

The spelling of 22116425 in words is "twenty-two million, one hundred sixteen thousand, four hundred twenty-five".