66230225 has 12 divisors (see below), whose sum is σ = 85696896. Its totient is φ = 50680080.

The previous prime is 66230209. The next prime is 66230239. The reversal of 66230225 is 52203266.

It is not a de Polignac number, because 66230225 - 2⁴ = 66230209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66230194 and 66230203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57017 + ... + 58166.

It is an arithmetic number, because the mean of its divisors is an integer number (7141408).

Almost surely, 2^66230225 is an apocalyptic number.

It is an amenable number.

66230225 is a deficient number, since it is larger than the sum of its proper divisors (19466671).

66230225 is a wasteful number, since it uses less digits than its factorization.

66230225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115216 (or 115211 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66230225 is about 8138.1954387935. The cubic root of 66230225 is about 404.5933529495.

The spelling of 66230225 in words is "sixty-six million, two hundred thirty thousand, two hundred twenty-five".