2665252765 has 48 divisors (see below), whose sum is σ = 3915346176. Its totient is φ = 1705017600.

The previous prime is 2665252763. The next prime is 2665252769. The reversal of 2665252765 is 5672525662.

It is not a de Polignac number, because 2665252765 - 2¹ = 2665252763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665252763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 757360 + ... + 760870.

It is an arithmetic number, because the mean of its divisors is an integer number (81569712).

Almost surely, 2^2665252765 is an apocalyptic number.

It is an amenable number.

2665252765 is a deficient number, since it is larger than the sum of its proper divisors (1250093411).

2665252765 is a wasteful number, since it uses less digits than its factorization.

2665252765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610 (or 3587 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 46.

The square root of 2665252765 is about 51626.0860902703. The cubic root of 2665252765 is about 1386.4774192072.

The spelling of 2665252765 in words is "two billion, six hundred sixty-five million, two hundred fifty-two thousand, seven hundred sixty-five".