1600561111125 has 16 divisors (see below), whose sum is σ = 2663333689536. Its totient is φ = 853632592400.

The previous prime is 1600561111117. The next prime is 1600561111151. The reversal of 1600561111125 is 5211111650061.

It is not a de Polignac number, because 1600561111125 - 2³ = 1600561111117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1600561111092 and 1600561111101.

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, 2134081107 + ... + 2134081856.

It is an arithmetic number, because the mean of its divisors is an integer number (166458355596).

Almost surely, 2^{1600561111125} is an apocalyptic number.

1600561111125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1600561111125 is a deficient number, since it is larger than the sum of its proper divisors (1062772578411).

1600561111125 is an equidigital number, since it uses as much as digits as its factorization.

1600561111125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268162981 (or 4268162971 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 30.

Adding to 1600561111125 its reverse (5211111650061), we get a palindrome (6811672761186).

The spelling of 1600561111125 in words is "one trillion, six hundred billion, five hundred sixty-one million, one hundred eleven thousand, one hundred twenty-five".