66935025 has 48 divisors (see below), whose sum is σ = 125349120. Its totient is φ = 35006400.

The previous prime is 66935021. The next prime is 66935039. The reversal of 66935025 is 52053966.

66935025 is a `hidden beast` number, since 66 + 93 + 502 + 5 = 666.

It is not a de Polignac number, because 66935025 - 2² = 66935021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66935021) 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 47 ways as a sum of consecutive naturals, for example, 34840 + ... + 36710.

It is an arithmetic number, because the mean of its divisors is an integer number (2611440).

Almost surely, 2^66935025 is an apocalyptic number.

It is an amenable number.

66935025 is a deficient number, since it is larger than the sum of its proper divisors (58414095).

66935025 is a wasteful number, since it uses less digits than its factorization.

66935025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 66935025 is about 8181.3828293266. The cubic root of 66935025 is about 406.0234745015.

The spelling of 66935025 in words is "sixty-six million, nine hundred thirty-five thousand, twenty-five".