66314225 has 6 divisors (see below), whose sum is σ = 82229670. Its totient is φ = 53051360.

The previous prime is 66314207. The next prime is 66314231. The reversal of 66314225 is 52241366.

It can be written as a sum of positive squares in 3 ways, for example, as 5776 + 66308449 = 76^2 + 8143^2 .

It is not a de Polignac number, because 66314225 - 2¹⁰ = 66313201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1326260 + ... + 1326309.

It is an arithmetic number, because the mean of its divisors is an integer number (13704945).

Almost surely, 2^66314225 is an apocalyptic number.

It is an amenable number.

66314225 is a deficient number, since it is larger than the sum of its proper divisors (15915445).

66314225 is a wasteful number, since it uses less digits than its factorization.

66314225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652579 (or 2652574 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 66314225 is about 8143.3546527214. The cubic root of 66314225 is about 404.7643296883.

The spelling of 66314225 in words is "sixty-six million, three hundred fourteen thousand, two hundred twenty-five".