66106225 has 24 divisors (see below), whose sum is σ = 89280000. Its totient is φ = 48363840.

The previous prime is 66106213. The next prime is 66106231. The reversal of 66106225 is 52260166.

It is not a de Polignac number, because 66106225 - 2⁵ = 66106193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66106193 and 66106202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11376 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (3720000).

Almost surely, 2^66106225 is an apocalyptic number.

It is an amenable number.

66106225 is a deficient number, since it is larger than the sum of its proper divisors (23173775).

66106225 is a wasteful number, since it uses less digits than its factorization.

66106225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857 (or 4852 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66106225 is about 8130.5734730091. The cubic root of 66106225 is about 404.3406942956.

The spelling of 66106225 in words is "sixty-six million, one hundred six thousand, two hundred twenty-five".