1012081265 has 16 divisors (see below), whose sum is σ = 1376760000. Its totient is φ = 708046272.

The previous prime is 1012081253. The next prime is 1012081267. The reversal of 1012081265 is 5621802101.

It is a cyclic number.

It is not a de Polignac number, because 1012081265 - 2⁴ = 1012081249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012081267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408515 + ... + 410984.

It is an arithmetic number, because the mean of its divisors is an integer number (86047500).

Almost surely, 2^1012081265 is an apocalyptic number.

It is an amenable number.

1012081265 is a deficient number, since it is larger than the sum of its proper divisors (364678735).

1012081265 is a wasteful number, since it uses less digits than its factorization.

1012081265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819536.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1012081265 is about 31813.2246872272. The cubic root of 1012081265 is about 1004.0109788723.

Adding to 1012081265 its reverse (5621802101), we get a palindrome (6633883366).

The spelling of 1012081265 in words is "one billion, twelve million, eighty-one thousand, two hundred sixty-five".