1125556812567 has 24 divisors (see below), whose sum is σ = 1773722150928. Its totient is φ = 682110460800.

The previous prime is 1125556812559. The next prime is 1125556812571. The reversal of 1125556812567 is 7652186555211.

1125556812567 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 5 + 5 + 68 + 12 + 567 = 666.

It is not a de Polignac number, because 1125556812567 - 2³ = 1125556812559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125556812517) 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 23 ways as a sum of consecutive naturals, for example, 1157067 + ... + 1894707.

It is an arithmetic number, because the mean of its divisors is an integer number (73905089622).

Almost surely, 2^{1125556812567} is an apocalyptic number.

1125556812567 is a deficient number, since it is larger than the sum of its proper divisors (648165338361).

1125556812567 is a wasteful number, since it uses less digits than its factorization.

1125556812567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753071 (or 753068 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 54.

The spelling of 1125556812567 in words is "one trillion, one hundred twenty-five billion, five hundred fifty-six million, eight hundred twelve thousand, five hundred sixty-seven".