66725123 has 2 divisors, whose sum is σ = 66725124. Its totient is φ = 66725122.

The previous prime is 66725117. The next prime is 66725149. The reversal of 66725123 is 32152766.

66725123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66725123 - 2¹⁴ = 66708739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66725123.

It is not a weakly prime, because it can be changed into another prime (66725623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33362561 + 33362562.

It is an arithmetic number, because the mean of its divisors is an integer number (33362562).

Almost surely, 2^66725123 is an apocalyptic number.

66725123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66725123 is an equidigital number, since it uses as much as digits as its factorization.

66725123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 66725123 is about 8168.5447296321. The cubic root of 66725123 is about 405.5986128246.

Adding to 66725123 its reverse (32152766), we get a palindrome (98877889).

The spelling of 66725123 in words is "sixty-six million, seven hundred twenty-five thousand, one hundred twenty-three".