66425123 has 2 divisors, whose sum is σ = 66425124. Its totient is φ = 66425122.

The previous prime is 66425113. The next prime is 66425141. The reversal of 66425123 is 32152466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66425123 - 2¹⁴ = 66408739 is a prime.

It is not a weakly prime, because it can be changed into another prime (66425113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33212561 + 33212562.

It is an arithmetic number, because the mean of its divisors is an integer number (33212562).

Almost surely, 2^66425123 is an apocalyptic number.

66425123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66425123 is an equidigital number, since it uses as much as digits as its factorization.

66425123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 66425123 is about 8150.1609186568. The cubic root of 66425123 is about 404.9898346277.

Adding to 66425123 its reverse (32152466), we get a palindrome (98577589).

The spelling of 66425123 in words is "sixty-six million, four hundred twenty-five thousand, one hundred twenty-three".