1125878312 has 32 divisors (see below), whose sum is σ = 2407141800. Its totient is φ = 489068544.

The previous prime is 1125878309. The next prime is 1125878353. The reversal of 1125878312 is 2138785211.

It can be written as a sum of positive squares in 4 ways, for example, as 1115159236 + 10719076 = 33394^2 + 3274^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316637 + ... + 320172.

Almost surely, 2^1125878312 is an apocalyptic number.

It is an amenable number.

1125878312 is an abundant number, since it is smaller than the sum of its proper divisors (1281263488).

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

1125878312 is a wasteful number, since it uses less digits than its factorization.

1125878312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636845 (or 636841 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 1125878312 is about 33554.1102102261. The cubic root of 1125878312 is about 1040.3125022429.

The spelling of 1125878312 in words is "one billion, one hundred twenty-five million, eight hundred seventy-eight thousand, three hundred twelve".