66732825 has 24 divisors (see below), whose sum is σ = 110725056. Its totient is φ = 35464000.

The previous prime is 66732817. The next prime is 66732881. The reversal of 66732825 is 52823766.

It is not a de Polignac number, because 66732825 - 2³ = 66732817 is a prime.

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, 21895 + ... + 24755.

It is an arithmetic number, because the mean of its divisors is an integer number (4613544).

Almost surely, 2^66732825 is an apocalyptic number.

It is an amenable number.

66732825 is a deficient number, since it is larger than the sum of its proper divisors (43992231).

66732825 is a wasteful number, since it uses less digits than its factorization.

66732825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185 (or 3180 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 66732825 is about 8169.0161586326. The cubic root of 66732825 is about 405.6142181428.

The spelling of 66732825 in words is "sixty-six million, seven hundred thirty-two thousand, eight hundred twenty-five".