16066825 has 6 divisors (see below), whose sum is σ = 19922894. Its totient is φ = 12853440.

The previous prime is 16066823. The next prime is 16066829. The reversal of 16066825 is 52866061.

It can be written as a sum of positive squares in 3 ways, for example, as 2758921 + 13307904 = 1661^2 + 3648^2 .

It is not a de Polignac number, because 16066825 - 2¹ = 16066823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16066823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321312 + ... + 321361.

Almost surely, 2^16066825 is an apocalyptic number.

It is an amenable number.

16066825 is a deficient number, since it is larger than the sum of its proper divisors (3856069).

16066825 is an equidigital number, since it uses as much as digits as its factorization.

16066825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642683 (or 642678 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 16066825 is about 4008.3444213291. The cubic root of 16066825 is about 252.3345319841.

The spelling of 16066825 in words is "sixteen million, sixty-six thousand, eight hundred twenty-five".