1001000125 has 16 divisors (see below), whose sum is σ = 1275835392. Its totient is φ = 783757200.

The previous prime is 1001000113. The next prime is 1001000131. The reversal of 1001000125 is 5210001001.

It is a happy number.

It is not a de Polignac number, because 1001000125 - 2²¹ = 998902973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79317 + ... + 91066.

It is an arithmetic number, because the mean of its divisors is an integer number (79739712).

Almost surely, 2^1001000125 is an apocalyptic number.

It is an amenable number.

1001000125 is a deficient number, since it is larger than the sum of its proper divisors (274835267).

1001000125 is an equidigital number, since it uses as much as digits as its factorization.

1001000125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170445 (or 170435 counting only the distinct ones).

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

The square root of 1001000125 is about 31638.5860145488. The cubic root of 1001000125 is about 1000.3332639228. Note that the first 3 decimals are identical.

Adding to 1001000125 its reverse (5210001001), we get a palindrome (6211001126).

The spelling of 1001000125 in words is "one billion, one million, one hundred twenty-five", and thus it is an aban number.