22305425 has 12 divisors (see below), whose sum is σ = 27767196. Its totient is φ = 17774400.

The previous prime is 22305419. The next prime is 22305457. The reversal of 22305425 is 52450322.

It can be written as a sum of positive squares in 6 ways, for example, as 692224 + 21613201 = 832^2 + 4649^2 .

It is not a de Polignac number, because 22305425 - 2⁸ = 22305169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22305425.

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, 5315 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (2313933).

Almost surely, 2^22305425 is an apocalyptic number.

22305425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22305425 is a deficient number, since it is larger than the sum of its proper divisors (5461771).

22305425 is a wasteful number, since it uses less digits than its factorization.

22305425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508 (or 3503 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22305425 is about 4722.8619501315. The cubic root of 22305425 is about 281.4946644665.

Adding to 22305425 its reverse (52450322), we get a palindrome (74755747).

The spelling of 22305425 in words is "twenty-two million, three hundred five thousand, four hundred twenty-five".