264255325065 has 24 divisors (see below), whose sum is σ = 458064701640. Its totient is φ = 140929361664.

The previous prime is 264255325063. The next prime is 264255325073. The reversal of 264255325065 is 560523552462.

264255325065 is a `hidden beast` number, since 2 + 6 + 4 + 2 + 5 + 532 + 50 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46288661904 + 217966663161 = 215148^2 + 466869^2 .

It is not a de Polignac number, because 264255325065 - 2¹ = 264255325063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 264255325065.

It is not an unprimeable number, because it can be changed into a prime (264255325063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 880429 + ... + 1141781.

It is an arithmetic number, because the mean of its divisors is an integer number (19086029235).

Almost surely, 2^264255325065 is an apocalyptic number.

It is an amenable number.

264255325065 is a deficient number, since it is larger than the sum of its proper divisors (193809376575).

264255325065 is a wasteful number, since it uses less digits than its factorization.

264255325065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283833 (or 283830 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 264255325065 in words is "two hundred sixty-four billion, two hundred fifty-five million, three hundred twenty-five thousand, sixty-five".