16606025 has 24 divisors (see below), whose sum is σ = 22357944. Its totient is φ = 12185600.

The previous prime is 16606003. The next prime is 16606033. The reversal of 16606025 is 52060661.

It can be written as a sum of positive squares in 12 ways, for example, as 7070281 + 9535744 = 2659^2 + 3088^2 .

It is not a de Polignac number, because 16606025 - 2¹⁸ = 16343881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16605985 and 16606003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16949 + ... + 17901.

It is an arithmetic number, because the mean of its divisors is an integer number (931581).

Almost surely, 2^16606025 is an apocalyptic number.

It is an amenable number.

16606025 is a deficient number, since it is larger than the sum of its proper divisors (5751919).

16606025 is a wasteful number, since it uses less digits than its factorization.

16606025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16606025 is about 4075.0490794590. The cubic root of 16606025 is about 255.1262990907.

Adding to 16606025 its reverse (52060661), we get a palindrome (68666686).

The spelling of 16606025 in words is "sixteen million, six hundred six thousand, twenty-five".