2666751287525 has 12 divisors (see below), whose sum is σ = 3561138642852. Its totient is φ = 1969293258240.

The previous prime is 2666751287483. The next prime is 2666751287527. The reversal of 2666751287525 is 5257821576662.

2666751287525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 282648532609 + 2384102754916 = 531647^2 + 1544054^2 .

It is not a de Polignac number, because 2666751287525 - 2¹⁰ = 2666751286501 is a prime.

It is a super-2 number, since 2×2666751287525² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666751287527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4102693964 + ... + 4102694613.

It is an arithmetic number, because the mean of its divisors is an integer number (296761553571).

Almost surely, 2^{2666751287525} is an apocalyptic number.

2666751287525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2666751287525 is a deficient number, since it is larger than the sum of its proper divisors (894387355327).

2666751287525 is a wasteful number, since it uses less digits than its factorization.

2666751287525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205388600 (or 8205388595 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 62.

The spelling of 2666751287525 in words is "two trillion, six hundred sixty-six billion, seven hundred fifty-one million, two hundred eighty-seven thousand, five hundred twenty-five".