1001125254543 has 16 divisors (see below), whose sum is σ = 1345948577280. Its totient is φ = 661879705536.

The previous prime is 1001125254539. The next prime is 1001125254553. The reversal of 1001125254543 is 3454525211001.

It is not a de Polignac number, because 1001125254543 - 2² = 1001125254539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001125254553) 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 15 ways as a sum of consecutive naturals, for example, 2342830 + ... + 2736987.

It is an arithmetic number, because the mean of its divisors is an integer number (84121786080).

Almost surely, 2^{1001125254543} is an apocalyptic number.

1001125254543 is a deficient number, since it is larger than the sum of its proper divisors (344823322737).

1001125254543 is a wasteful number, since it uses less digits than its factorization.

1001125254543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080366.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 1001125254543 in words is "one trillion, one billion, one hundred twenty-five million, two hundred fifty-four thousand, five hundred forty-three".