166325143 has 2 divisors, whose sum is σ = 166325144. Its totient is φ = 166325142.

The previous prime is 166325129. The next prime is 166325147. The reversal of 166325143 is 341523661.

It is a strong prime.

It is an emirp because it is prime and its reverse (341523661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166325143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166325147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83162571 + 83162572.

It is an arithmetic number, because the mean of its divisors is an integer number (83162572).

Almost surely, 2^166325143 is an apocalyptic number.

166325143 is a deficient number, since it is larger than the sum of its proper divisors (1).

166325143 is an equidigital number, since it uses as much as digits as its factorization.

166325143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 166325143 is about 12896.7105495936. The cubic root of 166325143 is about 549.9450556683.

The spelling of 166325143 in words is "one hundred sixty-six million, three hundred twenty-five thousand, one hundred forty-three".