16966025 has 6 divisors (see below), whose sum is σ = 21037902. Its totient is φ = 13572800.

The previous prime is 16966009. The next prime is 16966039. The reversal of 16966025 is 52066961.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4596736 + 12369289 = 2144^2 + 3517^2 .

It is not a de Polignac number, because 16966025 - 2⁴ = 16966009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339296 + ... + 339345.

It is an arithmetic number, because the mean of its divisors is an integer number (3506317).

Almost surely, 2^16966025 is an apocalyptic number.

It is an amenable number.

16966025 is a deficient number, since it is larger than the sum of its proper divisors (4071877).

16966025 is an equidigital number, since it uses as much as digits as its factorization.

16966025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678651 (or 678646 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 16966025 is about 4118.9834911055. The cubic root of 16966025 is about 256.9567520983.

The spelling of 16966025 in words is "sixteen million, nine hundred sixty-six thousand, twenty-five".