66525952 has 18 divisors (see below), whose sum is σ = 132792548. Its totient is φ = 33262848.

The previous prime is 66525941. The next prime is 66525961. The reversal of 66525952 is 25952566.

It is a happy number.

66525952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 129678 + ... + 130189.

Almost surely, 2^66525952 is an apocalyptic number.

It is an amenable number.

66525952 is a deficient number, since it is larger than the sum of its proper divisors (66266596).

66525952 is an equidigital number, since it uses as much as digits as its factorization.

66525952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259883 (or 259869 counting only the distinct ones).

The product of its digits is 162000, while the sum is 40.

The square root of 66525952 is about 8156.3442791486. The cubic root of 66525952 is about 405.1946470748.

The spelling of 66525952 in words is "sixty-six million, five hundred twenty-five thousand, nine hundred fifty-two".