166525660 has 24 divisors (see below), whose sum is σ = 399661920. Its totient is φ = 57094464.

The previous prime is 166525651. The next prime is 166525673. The reversal of 166525660 is 66525661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594595 + ... + 594874.

It is an arithmetic number, because the mean of its divisors is an integer number (16652580).

Almost surely, 2^166525660 is an apocalyptic number.

166525660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166525660 is an abundant number, since it is smaller than the sum of its proper divisors (233136260).

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

166525660 is a wasteful number, since it uses less digits than its factorization.

166525660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189485 (or 1189483 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 166525660 is about 12904.4821670612. The cubic root of 166525660 is about 550.1659664423.

Subtracting from 166525660 its reverse (66525661), we obtain a palindrome (99999999).

The spelling of 166525660 in words is "one hundred sixty-six million, five hundred twenty-five thousand, six hundred sixty".