16605125 has 16 divisors (see below), whose sum is σ = 21026304. Its totient is φ = 13090000.

The previous prime is 16605109. The next prime is 16605143. The reversal of 16605125 is 52150661.

It is not a de Polignac number, because 16605125 - 2⁴ = 16605109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16605094 and 16605103.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7940 + ... + 9810.

It is an arithmetic number, because the mean of its divisors is an integer number (1314144).

Almost surely, 2^16605125 is an apocalyptic number.

It is an amenable number.

16605125 is a deficient number, since it is larger than the sum of its proper divisors (4421179).

16605125 is an equidigital number, since it uses as much as digits as its factorization.

16605125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 16605125 is about 4074.9386498449. The cubic root of 16605125 is about 255.1216899640.

Adding to 16605125 its reverse (52150661), we get a palindrome (68755786).

The spelling of 16605125 in words is "sixteen million, six hundred five thousand, one hundred twenty-five".