66582825 has 24 divisors (see below), whose sum is σ = 110507808. Its totient is φ = 35374080.

The previous prime is 66582797. The next prime is 66582827. The reversal of 66582825 is 52828566.

It is not a de Polignac number, because 66582825 - 2¹⁹ = 66058537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66582827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19657 + ... + 22793.

It is an arithmetic number, because the mean of its divisors is an integer number (4604492).

Almost surely, 2^66582825 is an apocalyptic number.

It is an amenable number.

66582825 is a deficient number, since it is larger than the sum of its proper divisors (43924983).

66582825 is a wasteful number, since it uses less digits than its factorization.

66582825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433 (or 3428 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 66582825 is about 8159.8299614637. The cubic root of 66582825 is about 405.3100810803.

The spelling of 66582825 in words is "sixty-six million, five hundred eighty-two thousand, eight hundred twenty-five".