166925085860 has 48 divisors (see below), whose sum is σ = 377539100400. Its totient is φ = 61628719104.

The previous prime is 166925085857. The next prime is 166925085881. The reversal of 166925085860 is 68580529661.

It can be written as a sum of positive squares in 8 ways, for example, as 9263677504 + 157661408356 = 96248^2 + 397066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166925085796 and 166925085805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4643636 + ... + 4679444.

It is an arithmetic number, because the mean of its divisors is an integer number (7865397925).

Almost surely, 2^166925085860 is an apocalyptic number.

166925085860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166925085860 is an abundant number, since it is smaller than the sum of its proper divisors (210614014540).

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

166925085860 is a wasteful number, since it uses less digits than its factorization.

166925085860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53760 (or 53758 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 166925085860 in words is "one hundred sixty-six billion, nine hundred twenty-five million, eighty-five thousand, eight hundred sixty".