1305129265 has 16 divisors (see below), whose sum is σ = 1737495360. Its totient is φ = 933094720.

The previous prime is 1305129251. The next prime is 1305129271. The reversal of 1305129265 is 5629215031.

It is not a de Polignac number, because 1305129265 - 2²⁹ = 768258353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1305129265.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197854 + ... + 204343.

It is an arithmetic number, because the mean of its divisors is an integer number (108593460).

Almost surely, 2^1305129265 is an apocalyptic number.

It is an amenable number.

1305129265 is a deficient number, since it is larger than the sum of its proper divisors (432366095).

1305129265 is a wasteful number, since it uses less digits than its factorization.

1305129265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402272.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1305129265 is about 36126.5728377326. The cubic root of 1305129265 is about 1092.8263950836.

The spelling of 1305129265 in words is "one billion, three hundred five million, one hundred twenty-nine thousand, two hundred sixty-five".