66125123 has 2 divisors, whose sum is σ = 66125124. Its totient is φ = 66125122.

The previous prime is 66125117. The next prime is 66125141. The reversal of 66125123 is 32152166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66125123 - 2⁴ = 66125107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66125092 and 66125101.

It is not a weakly prime, because it can be changed into another prime (66125173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33062561 + 33062562.

It is an arithmetic number, because the mean of its divisors is an integer number (33062562).

Almost surely, 2^66125123 is an apocalyptic number.

66125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66125123 is an equidigital number, since it uses as much as digits as its factorization.

66125123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 66125123 is about 8131.7355466100. The cubic root of 66125123 is about 404.3792206846.

Adding to 66125123 its reverse (32152166), we get a palindrome (98277289).

The spelling of 66125123 in words is "sixty-six million, one hundred twenty-five thousand, one hundred twenty-three".