166725612 has 36 divisors (see below), whose sum is σ = 423816120. Its totient is φ = 55262592.

The previous prime is 166725571. The next prime is 166725617. The reversal of 166725612 is 216527661.

It is a happy number.

166725612 is a `hidden beast` number, since 16 + 6 + 7 + 25 + 612 = 666.

166725612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (166725617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6493 + ... + 19380.

It is an arithmetic number, because the mean of its divisors is an integer number (11772670).

Almost surely, 2^166725612 is an apocalyptic number.

166725612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166725612 is an abundant number, since it is smaller than the sum of its proper divisors (257090508).

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

166725612 is a wasteful number, since it uses less digits than its factorization.

166725612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26062 (or 26057 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 166725612 is about 12912.2272284839. The cubic root of 166725612 is about 550.3860782362.

The spelling of 166725612 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, six hundred twelve".