1125111616 has 28 divisors (see below), whose sum is σ = 2239726788. Its totient is φ = 560771072.

The previous prime is 1125111583. The next prime is 1125111623. The reversal of 1125111616 is 6161115211.

It can be written as a sum of positive squares in 2 ways, for example, as 20214016 + 1104897600 = 4496^2 + 33240^2 .

It is a super-2 number, since 2×1125111616² = 2531752296916262912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7441 + ... + 48016.

Almost surely, 2^1125111616 is an apocalyptic number.

1125111616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1125111616 is a deficient number, since it is larger than the sum of its proper divisors (1114615172).

1125111616 is an equidigital number, since it uses as much as digits as its factorization.

1125111616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55786 (or 55776 counting only the distinct ones).

The product of its digits is 360, while the sum is 25.

The square root of 1125111616 is about 33542.6834943181. The cubic root of 1125111616 is about 1040.0763060383.

Adding to 1125111616 its reverse (6161115211), we get a palindrome (7286226827).

The spelling of 1125111616 in words is "one billion, one hundred twenty-five million, one hundred eleven thousand, six hundred sixteen".