65606625 has 64 divisors (see below), whose sum is σ = 138677760. Its totient is φ = 29980800.

The previous prime is 65606623. The next prime is 65606641. The reversal of 65606625 is 52660656.

It is not a de Polignac number, because 65606625 - 2¹ = 65606623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65606625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65606623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22237 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (2166840).

Almost surely, 2^65606625 is an apocalyptic number.

It is an amenable number.

65606625 is an abundant number, since it is smaller than the sum of its proper divisors (73071135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65606625 is a wasteful number, since it uses less digits than its factorization.

65606625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65606625 is about 8099.7916639874. The cubic root of 65606625 is about 403.3195113235.

The spelling of 65606625 in words is "sixty-five million, six hundred six thousand, six hundred twenty-five".