166625456 has 10 divisors (see below), whose sum is σ = 322836852. Its totient is φ = 83312720.

The previous prime is 166625453. The next prime is 166625461. The reversal of 166625456 is 654526661.

It is not an unprimeable number, because it can be changed into a prime (166625453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207030 + ... + 5207061.

Almost surely, 2^166625456 is an apocalyptic number.

166625456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166625456 is a deficient number, since it is larger than the sum of its proper divisors (156211396).

166625456 is a wasteful number, since it uses less digits than its factorization.

166625456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414099 (or 10414093 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 166625456 is about 12908.3483064256. The cubic root of 166625456 is about 550.2758462024.

The spelling of 166625456 in words is "one hundred sixty-six million, six hundred twenty-five thousand, four hundred fifty-six".