16788625 has 24 divisors (see below), whose sum is σ = 24381864. Its totient is φ = 11508000.

The previous prime is 16788623. The next prime is 16788641. The reversal of 16788625 is 52688761.

It can be written as a sum of positive squares in 4 ways, for example, as 1640961 + 15147664 = 1281^2 + 3892^2 .

It is not a de Polignac number, because 16788625 - 2¹ = 16788623 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16788623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4755 + ... + 7495.

It is an arithmetic number, because the mean of its divisors is an integer number (1015911).

Almost surely, 2^16788625 is an apocalyptic number.

It is an amenable number.

16788625 is a deficient number, since it is larger than the sum of its proper divisors (7593239).

16788625 is an equidigital number, since it uses as much as digits as its factorization.

16788625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770 (or 2753 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 16788625 is about 4097.3924635065. The cubic root of 16788625 is about 256.0580160259.

The spelling of 16788625 in words is "sixteen million, seven hundred eighty-eight thousand, six hundred twenty-five".