16317425 has 18 divisors (see below), whose sum is σ = 20773782. Its totient is φ = 12714240.

The previous prime is 16317421. The next prime is 16317443. The reversal of 16317425 is 52471361.

It can be written as a sum of positive squares in 3 ways, for example, as 667489 + 15649936 = 817^2 + 3956^2 .

It is not a de Polignac number, because 16317425 - 2² = 16317421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16317421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46049 + ... + 46401.

It is an arithmetic number, because the mean of its divisors is an integer number (1154099).

Almost surely, 2^16317425 is an apocalyptic number.

It is an amenable number.

16317425 is a deficient number, since it is larger than the sum of its proper divisors (4456357).

16317425 is an equidigital number, since it uses as much as digits as its factorization.

16317425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 401 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 16317425 is about 4039.4832590320. The cubic root of 16317425 is about 253.6396868979.

Adding to 16317425 its reverse (52471361), we get a palindrome (68788786).

The spelling of 16317425 in words is "sixteen million, three hundred seventeen thousand, four hundred twenty-five".