166225004 has 24 divisors (see below), whose sum is σ = 317665488. Its totient is φ = 75479040.

The previous prime is 166224967. The next prime is 166225027. The reversal of 166225004 is 400522661.

It is an unprimeable number.

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, 81404 + ... + 83420.

It is an arithmetic number, because the mean of its divisors is an integer number (13236062).

Almost surely, 2^166225004 is an apocalyptic number.

It is an amenable number.

166225004 is a deficient number, since it is larger than the sum of its proper divisors (151440484).

166225004 is a wasteful number, since it uses less digits than its factorization.

166225004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905 (or 3903 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 166225004 is about 12892.8276184862. The cubic root of 166225004 is about 549.8346654556.

Adding to 166225004 its reverse (400522661), we get a palindrome (566747665).

The spelling of 166225004 in words is "one hundred sixty-six million, two hundred twenty-five thousand, four".