166367225 has 12 divisors (see below), whose sum is σ = 207087936. Its totient is φ = 132582480.

The previous prime is 166367221. The next prime is 166367261. The reversal of 166367225 is 522763661.

It is not a de Polignac number, because 166367225 - 2² = 166367221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166367221) 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, 6077 + ... + 19226.

It is an arithmetic number, because the mean of its divisors is an integer number (17257328).

Almost surely, 2^166367225 is an apocalyptic number.

It is an amenable number.

166367225 is a deficient number, since it is larger than the sum of its proper divisors (40720711).

166367225 is a wasteful number, since it uses less digits than its factorization.

166367225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25576 (or 25571 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 166367225 is about 12898.3419477079. The cubic root of 166367225 is about 549.9914323734.

The spelling of 166367225 in words is "one hundred sixty-six million, three hundred sixty-seven thousand, two hundred twenty-five".