166250145 has 16 divisors (see below), whose sum is σ = 266553792. Its totient is φ = 88482240.

The previous prime is 166250113. The next prime is 166250153. The reversal of 166250145 is 541052661.

It is not a de Polignac number, because 166250145 - 2⁵ = 166250113 is a prime.

It is a super-2 number, since 2×166250145² = 55278221425042050, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3922 + ... + 18651.

It is an arithmetic number, because the mean of its divisors is an integer number (16659612).

Almost surely, 2^166250145 is an apocalyptic number.

166250145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166250145 is a deficient number, since it is larger than the sum of its proper divisors (100303647).

166250145 is a wasteful number, since it uses less digits than its factorization.

166250145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23072.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 166250145 is about 12893.8025810852. The cubic root of 166250145 is about 549.8623843028.

The spelling of 166250145 in words is "one hundred sixty-six million, two hundred fifty thousand, one hundred forty-five".