1266750125802 has 80 divisors (see below), whose sum is σ = 3258119103360. Its totient is φ = 360348059232.

The previous prime is 1266750125791. The next prime is 1266750125803. The reversal of 1266750125802 is 2085210576621.

1266750125802 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 7 + 50 + 12 + 580 + 2 = 666.

It is a super-2 number, since 2×1266750125802² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1266750125803) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2179318 + ... + 2698689.

It is an arithmetic number, because the mean of its divisors is an integer number (40726488792).

Almost surely, 2^{1266750125802} is an apocalyptic number.

1266750125802 is an abundant number, since it is smaller than the sum of its proper divisors (1991368977558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266750125802 is a wasteful number, since it uses less digits than its factorization.

1266750125802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878257 (or 4878248 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 1266750125802 in words is "one trillion, two hundred sixty-six billion, seven hundred fifty million, one hundred twenty-five thousand, eight hundred two".