22105425 has 24 divisors (see below), whose sum is σ = 36694080. Its totient is φ = 11742400.

The previous prime is 22105403. The next prime is 22105439. The reversal of 22105425 is 52450122.

It is a happy number.

It is not a de Polignac number, because 22105425 - 2¹¹ = 22103377 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 26515 + ... + 27335.

It is an arithmetic number, because the mean of its divisors is an integer number (1528920).

Almost surely, 2^22105425 is an apocalyptic number.

22105425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22105425 is a deficient number, since it is larger than the sum of its proper divisors (14588655).

22105425 is a wasteful number, since it uses less digits than its factorization.

22105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22105425 is about 4701.6406710849. The cubic root of 22105425 is about 280.6508033442.

Adding to 22105425 its reverse (52450122), we get a palindrome (74555547).

The spelling of 22105425 in words is "twenty-two million, one hundred five thousand, four hundred twenty-five".