166725151 has 2 divisors, whose sum is σ = 166725152. Its totient is φ = 166725150.

The previous prime is 166725149. The next prime is 166725191. The reversal of 166725151 is 151527661.

It is a weak prime.

It is an emirp because it is prime and its reverse (151527661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166725151 - 2¹ = 166725149 is a prime.

Together with 166725149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166725101) 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, 83362575 + 83362576.

It is an arithmetic number, because the mean of its divisors is an integer number (83362576).

Almost surely, 2^166725151 is an apocalyptic number.

166725151 is a deficient number, since it is larger than the sum of its proper divisors (1).

166725151 is an equidigital number, since it uses as much as digits as its factorization.

166725151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 34.

The square root of 166725151 is about 12912.2093771748. The cubic root of 166725151 is about 550.3855709592.

The spelling of 166725151 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, one hundred fifty-one".