166825607 has 16 divisors (see below), whose sum is σ = 194285952. Its totient is φ = 141841920.

The previous prime is 166825591. The next prime is 166825613. The reversal of 166825607 is 706528661.

It is a cyclic number.

It is not a de Polignac number, because 166825607 - 2⁴ = 166825591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166825657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2357 + ... + 18417.

It is an arithmetic number, because the mean of its divisors is an integer number (12142872).

Almost surely, 2^166825607 is an apocalyptic number.

166825607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

166825607 is a deficient number, since it is larger than the sum of its proper divisors (27460345).

166825607 is a wasteful number, since it uses less digits than its factorization.

166825607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16138.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 166825607 is about 12916.0987531065. The cubic root of 166825607 is about 550.4960890422.

The spelling of 166825607 in words is "one hundred sixty-six million, eight hundred twenty-five thousand, six hundred seven".