1125111615 has 16 divisors (see below), whose sum is σ = 1838481408. Its totient is φ = 587291936.

The previous prime is 1125111583. The next prime is 1125111623. The reversal of 1125111615 is 5161115211.

It is a cyclic number.

It is not a de Polignac number, because 1125111615 - 2⁵ = 1125111583 is a prime.

It is a super-2 number, since 2×1125111615² = 2531752292415816450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797247 + ... + 798656.

It is an arithmetic number, because the mean of its divisors is an integer number (114905088).

Almost surely, 2^1125111615 is an apocalyptic number.

1125111615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125111615 is a deficient number, since it is larger than the sum of its proper divisors (713369793).

1125111615 is a wasteful number, since it uses less digits than its factorization.

1125111615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595958.

The product of its digits is 300, while the sum is 24.

The square root of 1125111615 is about 33542.6834794117. The cubic root of 1125111615 is about 1040.0763057301.

Adding to 1125111615 its reverse (5161115211), we get a palindrome (6286226826).

The spelling of 1125111615 in words is "one billion, one hundred twenty-five million, one hundred eleven thousand, six hundred fifteen".