276666866225 has 12 divisors (see below), whose sum is σ = 343102164684. Its totient is φ = 221310750720.

The previous prime is 276666866207. The next prime is 276666866237. The reversal of 276666866225 is 522668666672.

It can be written as a sum of positive squares in 6 ways, for example, as 51918812449 + 224748053776 = 227857^2 + 474076^2 .

It is a de Polignac number, because none of the positive numbers 2^k-276666866225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318224 + ... + 809073.

It is an arithmetic number, because the mean of its divisors is an integer number (28591847057).

Almost surely, 2^276666866225 is an apocalyptic number.

276666866225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

276666866225 is a deficient number, since it is larger than the sum of its proper divisors (66435298459).

276666866225 is a wasteful number, since it uses less digits than its factorization.

276666866225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137124 (or 1137119 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 62.

The spelling of 276666866225 in words is "two hundred seventy-six billion, six hundred sixty-six million, eight hundred sixty-six thousand, two hundred twenty-five".