66322825 has 12 divisors (see below), whose sum is σ = 86569360. Its totient is φ = 50265360.

The previous prime is 66322793. The next prime is 66322847. The reversal of 66322825 is 52822366.

It is not a de Polignac number, because 66322825 - 2⁵ = 66322793 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 69339 + ... + 70288.

Almost surely, 2^66322825 is an apocalyptic number.

It is an amenable number.

66322825 is a deficient number, since it is larger than the sum of its proper divisors (20246535).

66322825 is a wasteful number, since it uses less digits than its factorization.

66322825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139656 (or 139651 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 66322825 is about 8143.8826735164. The cubic root of 66322825 is about 404.7818263002.

The spelling of 66322825 in words is "sixty-six million, three hundred twenty-two thousand, eight hundred twenty-five".