65656325 has 18 divisors (see below), whose sum is σ = 94707666. Its totient is φ = 45020640.

The previous prime is 65656309. The next prime is 65656351. The reversal of 65656325 is 52365656.

It can be written as a sum of positive squares in 3 ways, for example, as 14876449 + 50779876 = 3857^2 + 7126^2 .

It is not a de Polignac number, because 65656325 - 2⁴ = 65656309 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25574 + ... + 28023.

It is an arithmetic number, because the mean of its divisors is an integer number (5261537).

Almost surely, 2^65656325 is an apocalyptic number.

It is an amenable number.

65656325 is a deficient number, since it is larger than the sum of its proper divisors (29051341).

65656325 is a wasteful number, since it uses less digits than its factorization.

65656325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53621 (or 53609 counting only the distinct ones).

The product of its digits is 162000, while the sum is 38.

The square root of 65656325 is about 8102.8590633183. The cubic root of 65656325 is about 403.4213299035.

The spelling of 65656325 in words is "sixty-five million, six hundred fifty-six thousand, three hundred twenty-five".