166251425 has 12 divisors (see below), whose sum is σ = 217002480. Its totient is φ = 126000720.

The previous prime is 166251401. The next prime is 166251427. The reversal of 166251425 is 524152661.

166251425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166251425 - 2¹² = 166247329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166251391 and 166251400.

It is not an unprimeable number, because it can be changed into a prime (166251427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174527 + ... + 175476.

It is an arithmetic number, because the mean of its divisors is an integer number (18083540).

Almost surely, 2^166251425 is an apocalyptic number.

It is an amenable number.

166251425 is a deficient number, since it is larger than the sum of its proper divisors (50751055).

166251425 is a wasteful number, since it uses less digits than its factorization.

166251425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350032 (or 350027 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 166251425 is about 12893.8522172390. The cubic root of 166251425 is about 549.8637954736.

The spelling of 166251425 in words is "one hundred sixty-six million, two hundred fifty-one thousand, four hundred twenty-five".