66025004 has 12 divisors (see below), whose sum is σ = 115736544. Its totient is φ = 32957424.

The previous prime is 66024941. The next prime is 66025021. The reversal of 66025004 is 40052066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11012 + ... + 15915.

It is an arithmetic number, because the mean of its divisors is an integer number (9644712).

Almost surely, 2^66025004 is an apocalyptic number.

It is an amenable number.

66025004 is a deficient number, since it is larger than the sum of its proper divisors (49711540).

66025004 is a wasteful number, since it uses less digits than its factorization.

66025004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27544 (or 27542 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 66025004 is about 8125.5771487323. The cubic root of 66025004 is about 404.1750295408.

The spelling of 66025004 in words is "sixty-six million, twenty-five thousand, four".