166028325 has 12 divisors (see below), whose sum is σ = 274500288. Its totient is φ = 88548400.

The previous prime is 166028323. The next prime is 166028347. The reversal of 166028325 is 523820661.

It is not a de Polignac number, because 166028325 - 2¹ = 166028323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166028323) 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 11 ways as a sum of consecutive naturals, for example, 1106781 + ... + 1106930.

It is an arithmetic number, because the mean of its divisors is an integer number (22875024).

Almost surely, 2^166028325 is an apocalyptic number.

166028325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166028325 is a deficient number, since it is larger than the sum of its proper divisors (108471963).

166028325 is a wasteful number, since it uses less digits than its factorization.

166028325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213724 (or 2213719 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 166028325 is about 12885.1979030203. The cubic root of 166028325 is about 549.6177233415.

Adding to 166028325 its reverse (523820661), we get a palindrome (689848986).

The spelling of 166028325 in words is "one hundred sixty-six million, twenty-eight thousand, three hundred twenty-five".