65328804025 has 81 divisors (see below), whose sum is σ = 89844772167. Its totient is φ = 47111270400.

The previous prime is 65328804011. The next prime is 65328804031. The reversal of 65328804025 is 52040882356.

The square root of 65328804025 is 255595.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 26015431849 + 39313372176 = 161293^2 + 198276^2 .

It is not a de Polignac number, because 65328804025 - 2²⁷ = 65194586297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 673492777 + ... + 673492873.

Almost surely, 2^65328804025 is an apocalyptic number.

65328804025 is the 255595-th square number.

65328804025 is the 127798-th centered octagonal number.

It is an amenable number.

65328804025 is a deficient number, since it is larger than the sum of its proper divisors (24515968142).

65328804025 is an equidigital number, since it uses as much as digits as its factorization.

65328804025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 65328804025 in words is "sixty-five billion, three hundred twenty-eight million, eight hundred four thousand, twenty-five".