66066425 has 12 divisors (see below), whose sum is σ = 84566016. Its totient is φ = 51147600.

The previous prime is 66066397. The next prime is 66066431. The reversal of 66066425 is 52466066.

It is not a de Polignac number, because 66066425 - 2¹⁴ = 66050041 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 41849 + ... + 43398.

It is an arithmetic number, because the mean of its divisors is an integer number (7047168).

Almost surely, 2^66066425 is an apocalyptic number.

It is an amenable number.

66066425 is a deficient number, since it is larger than the sum of its proper divisors (18499591).

66066425 is a wasteful number, since it uses less digits than its factorization.

66066425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85288 (or 85283 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 66066425 is about 8128.1255526720. The cubic root of 66066425 is about 404.2595320434.

It can be divided in two parts, 6606 and 6425, that added together give a palindrome (13031).

The spelling of 66066425 in words is "sixty-six million, sixty-six thousand, four hundred twenty-five".