1166551050525 has 48 divisors (see below), whose sum is σ = 2216540275200. Its totient is φ = 530301216960.

The previous prime is 1166551050463. The next prime is 1166551050529. The reversal of 1166551050525 is 5250501556611.

It is not a de Polignac number, because 1166551050525 - 2⁹ = 1166551050013 is a prime.

It is a super-2 number, since 2×1166551050525² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166551050529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6112735 + ... + 6300684.

It is an arithmetic number, because the mean of its divisors is an integer number (46177922400).

Almost surely, 2^{1166551050525} is an apocalyptic number.

1166551050525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166551050525 is a deficient number, since it is larger than the sum of its proper divisors (1049989224675).

1166551050525 is a wasteful number, since it uses less digits than its factorization.

1166551050525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12413618 (or 12413613 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 42.

The spelling of 1166551050525 in words is "one trillion, one hundred sixty-six billion, five hundred fifty-one million, fifty thousand, five hundred twenty-five".