66038225 has 12 divisors (see below), whose sum is σ = 89332080. Its totient is φ = 48027600.

The previous prime is 66038207. The next prime is 66038237. The reversal of 66038225 is 52283066.

It is not a de Polignac number, because 66038225 - 2⁸ = 66037969 is a prime.

It is a super-2 number, since 2×66038225² = 8722094322301250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66038191 and 66038200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119795 + ... + 120344.

It is an arithmetic number, because the mean of its divisors is an integer number (7444340).

Almost surely, 2^66038225 is an apocalyptic number.

It is an amenable number.

66038225 is a deficient number, since it is larger than the sum of its proper divisors (23293855).

66038225 is a wasteful number, since it uses less digits than its factorization.

66038225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240160 (or 240155 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66038225 is about 8126.3906502210. The cubic root of 66038225 is about 404.2020053889.

The spelling of 66038225 in words is "sixty-six million, thirty-eight thousand, two hundred twenty-five".