22045425 has 24 divisors (see below), whose sum is σ = 36661344. Its totient is φ = 11688960.

The previous prime is 22045367. The next prime is 22045427. The reversal of 22045425 is 52454022.

It is a happy number.

It is not a de Polignac number, because 22045425 - 2¹¹ = 22043377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22045395 and 22045404.

It is not an unprimeable number, because it can be changed into a prime (22045427) by changing a digit.

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, 13714 + ... + 15236.

It is an arithmetic number, because the mean of its divisors is an integer number (1527556).

Almost surely, 2^22045425 is an apocalyptic number.

22045425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22045425 is a deficient number, since it is larger than the sum of its proper divisors (14615919).

22045425 is a wasteful number, since it uses less digits than its factorization.

22045425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22045425 is about 4695.2555840976. The cubic root of 22045425 is about 280.3966529651.

Adding to 22045425 its reverse (52454022), we get a palindrome (74499447).

The spelling of 22045425 in words is "twenty-two million, forty-five thousand, four hundred twenty-five".