66025147 has 2 divisors, whose sum is σ = 66025148. Its totient is φ = 66025146.

The previous prime is 66025117. The next prime is 66025151. The reversal of 66025147 is 74152066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66025147 - 2¹⁵ = 65992379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66025117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33012573 + 33012574.

It is an arithmetic number, because the mean of its divisors is an integer number (33012574).

Almost surely, 2^66025147 is an apocalyptic number.

66025147 is a deficient number, since it is larger than the sum of its proper divisors (1).

66025147 is an equidigital number, since it uses as much as digits as its factorization.

66025147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 66025147 is about 8125.5859481025. The cubic root of 66025147 is about 404.1753213343.

The spelling of 66025147 in words is "sixty-six million, twenty-five thousand, one hundred forty-seven".