1000001000125 has 16 divisors (see below), whose sum is σ = 1248081149952. Its totient is φ = 799949581200.

The previous prime is 1000001000111. The next prime is 1000001000129. The reversal of 1000001000125 is 5210001000001.

It is a happy number.

It is not a de Polignac number, because 1000001000125 - 2⁵ = 1000001000093 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 (1000001000129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767844 + ... + 2263906.

It is an arithmetic number, because the mean of its divisors is an integer number (78005071872).

Almost surely, 2^{1000001000125} is an apocalyptic number.

It is an amenable number.

1000001000125 is a deficient number, since it is larger than the sum of its proper divisors (248080149827).

1000001000125 is an equidigital number, since it uses as much as digits as its factorization.

1000001000125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512205 (or 512195 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

Adding to 1000001000125 its reverse (5210001000001), we get a palindrome (6210002000126).

The spelling of 1000001000125 in words is "one trillion, one million, one hundred twenty-five", and thus it is an aban number.