1005061125503 has 4 divisors (see below), whose sum is σ = 1008971869440. Its totient is φ = 1001150381568.

The previous prime is 1005061125493. The next prime is 1005061125533. The reversal of 1005061125503 is 3055211605001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005061125503 - 2⁸ = 1005061125247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005061125533) 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 3 ways as a sum of consecutive naturals, for example, 1955371583 + ... + 1955372096.

It is an arithmetic number, because the mean of its divisors is an integer number (252242967360).

Almost surely, 2^{1005061125503} is an apocalyptic number.

1005061125503 is a deficient number, since it is larger than the sum of its proper divisors (3910743937).

1005061125503 is an equidigital number, since it uses as much as digits as its factorization.

1005061125503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910743936.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 1005061125503 in words is "one trillion, five billion, sixty-one million, one hundred twenty-five thousand, five hundred three".