66525079 has 2 divisors, whose sum is σ = 66525080. Its totient is φ = 66525078.

The previous prime is 66525071. The next prime is 66525089. The reversal of 66525079 is 97052566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66525079 - 2³ = 66525071 is a prime.

It is a super-2 number, since 2×66525079² = 8851172271912482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66525071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33262539 + 33262540.

It is an arithmetic number, because the mean of its divisors is an integer number (33262540).

Almost surely, 2^66525079 is an apocalyptic number.

66525079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66525079 is an equidigital number, since it uses as much as digits as its factorization.

66525079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 66525079 is about 8156.2907623502. The cubic root of 66525079 is about 405.1928746513.

The spelling of 66525079 in words is "sixty-six million, five hundred twenty-five thousand, seventy-nine".