166425101 has 2 divisors, whose sum is σ = 166425102. Its totient is φ = 166425100.

The previous prime is 166425059. The next prime is 166425107. The reversal of 166425101 is 101524661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165148201 + 1276900 = 12851^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 166425101 - 2⁶ = 166425037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166425107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83212550 + 83212551.

It is an arithmetic number, because the mean of its divisors is an integer number (83212551).

Almost surely, 2^166425101 is an apocalyptic number.

It is an amenable number.

166425101 is a deficient number, since it is larger than the sum of its proper divisors (1).

166425101 is an equidigital number, since it uses as much as digits as its factorization.

166425101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 166425101 is about 12900.5852967995. The cubic root of 166425101 is about 550.0552021728.

Adding to 166425101 its reverse (101524661), we get a palindrome (267949762).

The spelling of 166425101 in words is "one hundred sixty-six million, four hundred twenty-five thousand, one hundred one".