1125281332 has 48 divisors (see below), whose sum is σ = 2304626688. Its totient is φ = 470734560.

The previous prime is 1125281321. The next prime is 1125281347. The reversal of 1125281332 is 2331825211.

It is a super-2 number, since 2×1125281332² = 2532516152295388448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1125281332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613657 + ... + 615487.

It is an arithmetic number, because the mean of its divisors is an integer number (48013056).

Almost surely, 2^1125281332 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 1125281332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152313344).

1125281332 is an abundant number, since it is smaller than the sum of its proper divisors (1179345356).

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

1125281332 is a wasteful number, since it uses less digits than its factorization.

1125281332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2354 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 1125281332 is about 33545.2132501792. The cubic root of 1125281332 is about 1040.1285997287.

The spelling of 1125281332 in words is "one billion, one hundred twenty-five million, two hundred eighty-one thousand, three hundred thirty-two".