166012825 has 24 divisors (see below), whose sum is σ = 226789056. Its totient is φ = 119544000.

The previous prime is 166012799. The next prime is 166012829. The reversal of 166012825 is 528210661.

It is not a de Polignac number, because 166012825 - 2⁵ = 166012793 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166012829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25395 + ... + 31255.

It is an arithmetic number, because the mean of its divisors is an integer number (9449544).

Almost surely, 2^166012825 is an apocalyptic number.

It is an amenable number.

166012825 is a deficient number, since it is larger than the sum of its proper divisors (60776231).

166012825 is a wasteful number, since it uses less digits than its factorization.

166012825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985 (or 5980 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 166012825 is about 12884.5964236370. The cubic root of 166012825 is about 549.6006191519.

The spelling of 166012825 in words is "one hundred sixty-six million, twelve thousand, eight hundred twenty-five".