65580625 has 20 divisors (see below), whose sum is σ = 89408880. Its totient is φ = 47690000.

The previous prime is 65580601. The next prime is 65580631. The reversal of 65580625 is 52608556.

It is not a de Polignac number, because 65580625 - 2⁷ = 65580497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2106 + ... + 11644.

It is an arithmetic number, because the mean of its divisors is an integer number (4470444).

Almost surely, 2^65580625 is an apocalyptic number.

It is an amenable number.

65580625 is a deficient number, since it is larger than the sum of its proper divisors (23828255).

65580625 is an equidigital number, since it uses as much as digits as its factorization.

65580625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570 (or 9555 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 65580625 is about 8098.1865253895. The cubic root of 65580625 is about 403.2662255827.

The spelling of 65580625 in words is "sixty-five million, five hundred eighty thousand, six hundred twenty-five".