166425458 has 16 divisors (see below), whose sum is σ = 253653120. Its totient is φ = 81882576.

The previous prime is 166425433. The next prime is 166425463. The reversal of 166425458 is 854524661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42791 + ... + 46517.

It is an arithmetic number, because the mean of its divisors is an integer number (15853320).

Almost surely, 2^166425458 is an apocalyptic number.

166425458 is a deficient number, since it is larger than the sum of its proper divisors (87227662).

166425458 is a wasteful number, since it uses less digits than its factorization.

166425458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081.

The product of its digits is 230400, while the sum is 41.

The square root of 166425458 is about 12900.5991333736. The cubic root of 166425458 is about 550.0555954820.

The spelling of 166425458 in words is "one hundred sixty-six million, four hundred twenty-five thousand, four hundred fifty-eight".