65265265 has 12 divisors (see below), whose sum is σ = 84807324. Its totient is φ = 48195264.

The previous prime is 65265257. The next prime is 65265287. The reversal of 65265265 is 56256256.

It can be written as a sum of positive squares in 6 ways, for example, as 36288576 + 28976689 = 6024^2 + 5383^2 .

It is not a de Polignac number, because 65265265 - 2³ = 65265257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37774 + ... + 39463.

It is an arithmetic number, because the mean of its divisors is an integer number (7067277).

Almost surely, 2^65265265 is an apocalyptic number.

65265265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65265265 is a deficient number, since it is larger than the sum of its proper divisors (19542059).

65265265 is a wasteful number, since it uses less digits than its factorization.

65265265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77268 (or 77255 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 65265265 is about 8078.6920352245. The cubic root of 65265265 is about 402.6187862306.

Subtracting from 65265265 its reverse (56256256), we obtain a palindrome (9009009).

The spelling of 65265265 in words is "sixty-five million, two hundred sixty-five thousand, two hundred sixty-five".