166011425 has 12 divisors (see below), whose sum is σ = 207122160. Its totient is φ = 131991120.

The previous prime is 166011421. The next prime is 166011431. The reversal of 166011425 is 524110661.

It is not a de Polignac number, because 166011425 - 2² = 166011421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166011394 and 166011403.

It is not an unprimeable number, because it can be changed into a prime (166011421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16295 + ... + 24444.

It is an arithmetic number, because the mean of its divisors is an integer number (17260180).

Almost surely, 2^166011425 is an apocalyptic number.

It is an amenable number.

166011425 is a deficient number, since it is larger than the sum of its proper divisors (41110735).

166011425 is a wasteful number, since it uses less digits than its factorization.

166011425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40912 (or 40907 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 166011425 is about 12884.5420950843. The cubic root of 166011425 is about 549.5990742049.

The spelling of 166011425 in words is "one hundred sixty-six million, eleven thousand, four hundred twenty-five".