1001125205 has 8 divisors (see below), whose sum is σ = 1218271104. Its totient is φ = 789619600.

The previous prime is 1001125201. The next prime is 1001125207. The reversal of 1001125205 is 5025211001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001125205 - 2² = 1001125201 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 (1001125201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409681 + ... + 1410390.

It is an arithmetic number, because the mean of its divisors is an integer number (152283888).

Almost surely, 2^1001125205 is an apocalyptic number.

It is an amenable number.

1001125205 is a deficient number, since it is larger than the sum of its proper divisors (217145899).

1001125205 is an equidigital number, since it uses as much as digits as its factorization.

1001125205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820147.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1001125205 is about 31640.5626530250. The cubic root of 1001125205 is about 1000.3749277450.

Adding to 1001125205 its reverse (5025211001), we get a palindrome (6026336206).

The spelling of 1001125205 in words is "one billion, one million, one hundred twenty-five thousand, two hundred five".