1125111320 has 16 divisors (see below), whose sum is σ = 2531500560. Its totient is φ = 450044512.

The previous prime is 1125111319. The next prime is 1125111329. The reversal of 1125111320 is 231115211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125111329) 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, 14063852 + ... + 14063931.

It is an arithmetic number, because the mean of its divisors is an integer number (158218785).

Almost surely, 2^1125111320 is an apocalyptic number.

1125111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125111320 is an abundant number, since it is smaller than the sum of its proper divisors (1406389240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125111320 is a wasteful number, since it uses less digits than its factorization.

1125111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28127794 (or 28127790 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1125111320 is about 33542.6790820292. The cubic root of 1125111320 is about 1040.0762148288.

Adding to 1125111320 its reverse (231115211), we get a palindrome (1356226531).

The spelling of 1125111320 in words is "one billion, one hundred twenty-five million, one hundred eleven thousand, three hundred twenty".