66025201 has 4 divisors (see below), whose sum is σ = 72027504. Its totient is φ = 60022900.

The previous prime is 66025187. The next prime is 66025207. The reversal of 66025201 is 10252066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66025201 - 2⁷ = 66025073 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66025207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001135 + ... + 3001156.

It is an arithmetic number, because the mean of its divisors is an integer number (18006876).

Almost surely, 2^66025201 is an apocalyptic number.

It is an amenable number.

66025201 is a deficient number, since it is larger than the sum of its proper divisors (6002303).

66025201 is a wasteful number, since it uses less digits than its factorization.

66025201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002302.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66025201 is about 8125.5892709391. The cubic root of 66025201 is about 404.1754315219.

Adding to 66025201 its reverse (10252066), we get a palindrome (76277267).

The spelling of 66025201 in words is "sixty-six million, twenty-five thousand, two hundred one".