1125515512 has 48 divisors (see below), whose sum is σ = 2379029400. Its totient is φ = 495057600.

The previous prime is 1125515509. The next prime is 1125515527. The reversal of 1125515512 is 2155155211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77914 + ... + 91222.

Almost surely, 2^1125515512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125515512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189514700).

1125515512 is an abundant number, since it is smaller than the sum of its proper divisors (1253513888).

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

1125515512 is a wasteful number, since it uses less digits than its factorization.

1125515512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388 (or 13353 counting only the distinct ones).

The product of its digits is 2500, while the sum is 28.

The square root of 1125515512 is about 33548.7035815097. The cubic root of 1125515512 is about 1040.2007477370.

The spelling of 1125515512 in words is "one billion, one hundred twenty-five million, five hundred fifteen thousand, five hundred twelve".