166125641 has 8 divisors (see below), whose sum is σ = 185443104. Its totient is φ = 147510720.

The previous prime is 166125611. The next prime is 166125643. The reversal of 166125641 is 146521661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166125641 - 2⁶ = 166125577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166125598 and 166125607.

It is not an unprimeable number, because it can be changed into a prime (166125643) 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 in 7 ways as a sum of consecutive naturals, for example, 175136 + ... + 176081.

It is an arithmetic number, because the mean of its divisors is an integer number (23180388).

Almost surely, 2^166125641 is an apocalyptic number.

166125641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166125641 is a deficient number, since it is larger than the sum of its proper divisors (19317463).

166125641 is a wasteful number, since it uses less digits than its factorization.

166125641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351271.

The product of its digits is 8640, while the sum is 32.

The square root of 166125641 is about 12888.9736208901. The cubic root of 166125641 is about 549.7250868522.

The spelling of 166125641 in words is "one hundred sixty-six million, one hundred twenty-five thousand, six hundred forty-one".