66008825 has 12 divisors (see below), whose sum is σ = 82161408. Its totient is φ = 52606800.

The previous prime is 66008819. The next prime is 66008857. The reversal of 66008825 is 52880066.

It is not a de Polignac number, because 66008825 - 2²⁰ = 64960249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1904 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (6846784).

Almost surely, 2^66008825 is an apocalyptic number.

It is an amenable number.

66008825 is a deficient number, since it is larger than the sum of its proper divisors (16152583).

66008825 is a wasteful number, since it uses less digits than its factorization.

66008825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10024 (or 10019 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 66008825 is about 8124.5815276850. The cubic root of 66008825 is about 404.1420133520.

The spelling of 66008825 in words is "sixty-six million, eight thousand, eight hundred twenty-five".