66423425 has 24 divisors (see below), whose sum is σ = 86452800. Its totient is φ = 50529600.

The previous prime is 66423397. The next prime is 66423463. The reversal of 66423425 is 52432466.

66423425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66423425 - 2⁸ = 66423169 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66423391 and 66423400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190151 + ... + 190499.

It is an arithmetic number, because the mean of its divisors is an integer number (3602200).

Almost surely, 2^66423425 is an apocalyptic number.

It is an amenable number.

66423425 is a deficient number, since it is larger than the sum of its proper divisors (20029375).

66423425 is a wasteful number, since it uses less digits than its factorization.

66423425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 708 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 66423425 is about 8150.0567482687. The cubic root of 66423425 is about 404.9863837316.

The spelling of 66423425 in words is "sixty-six million, four hundred twenty-three thousand, four hundred twenty-five".