166067525 has 24 divisors (see below), whose sum is σ = 222839904. Its totient is φ = 122040000.

The previous prime is 166067519. The next prime is 166067537. The reversal of 166067525 is 525760661.

It is not a de Polignac number, because 166067525 - 2¹⁰ = 166066501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72650 + ... + 74900.

It is an arithmetic number, because the mean of its divisors is an integer number (9284996).

Almost surely, 2^166067525 is an apocalyptic number.

It is an amenable number.

166067525 is a deficient number, since it is larger than the sum of its proper divisors (56772379).

166067525 is a wasteful number, since it uses less digits than its factorization.

166067525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 166067525 is about 12886.7189385041. The cubic root of 166067525 is about 549.6609756386.

The spelling of 166067525 in words is "one hundred sixty-six million, sixty-seven thousand, five hundred twenty-five".