1125111617 has 4 divisors (see below), whose sum is σ = 1285841856. Its totient is φ = 964381380.

The previous prime is 1125111583. The next prime is 1125111623. The reversal of 1125111617 is 7161115211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125111617 - 2⁶ = 1125111553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125111517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80365109 + ... + 80365122.

It is an arithmetic number, because the mean of its divisors is an integer number (321460464).

Almost surely, 2^1125111617 is an apocalyptic number.

It is an amenable number.

1125111617 is a deficient number, since it is larger than the sum of its proper divisors (160730239).

1125111617 is an equidigital number, since it uses as much as digits as its factorization.

1125111617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160730238.

The product of its digits is 420, while the sum is 26.

The square root of 1125111617 is about 33542.6835092245. The cubic root of 1125111617 is about 1040.0763063464.

Adding to 1125111617 its reverse (7161115211), we get a palindrome (8286226828).

The spelling of 1125111617 in words is "one billion, one hundred twenty-five million, one hundred eleven thousand, six hundred seventeen".