166125500 has 24 divisors (see below), whose sum is σ = 362819184. Its totient is φ = 66450000.

The previous prime is 166125467. The next prime is 166125503. The reversal of 166125500 is 5521661.

It is a self number, because there is not a number n which added to its sum of digits gives 166125500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166125503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165626 + ... + 166625.

It is an arithmetic number, because the mean of its divisors is an integer number (15117466).

Almost surely, 2^166125500 is an apocalyptic number.

166125500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166125500 is an abundant number, since it is smaller than the sum of its proper divisors (196693684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166125500 is a wasteful number, since it uses less digits than its factorization.

166125500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332270 (or 332258 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 166125500 is about 12888.9681510973. The cubic root of 166125500 is about 549.7249313248.

The spelling of 166125500 in words is "one hundred sixty-six million, one hundred twenty-five thousand, five hundred".