66303825 has 144 divisors (see below), whose sum is σ = 146181120. Its totient is φ = 25850880.

The previous prime is 66303821. The next prime is 66303841. The reversal of 66303825 is 52830366.

It is not a de Polignac number, because 66303825 - 2² = 66303821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66303821) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 2882764 + ... + 2882786.

Almost surely, 2^66303825 is an apocalyptic number.

It is an amenable number.

66303825 is an abundant number, since it is smaller than the sum of its proper divisors (79877295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66303825 is a wasteful number, since it uses less digits than its factorization.

66303825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66303825 is about 8142.7160702065. The cubic root of 66303825 is about 404.7431689740.

The spelling of 66303825 in words is "sixty-six million, three hundred three thousand, eight hundred twenty-five".