1125276288 has 128 divisors (see below), whose sum is σ = 3192583680. Its totient is φ = 350321664.

The previous prime is 1125276277. The next prime is 1125276289. The reversal of 1125276288 is 8826725211.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1125276289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378295 + ... + 381257.

It is an arithmetic number, because the mean of its divisors is an integer number (24942060).

Almost surely, 2^1125276288 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 1125276288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596291840).

1125276288 is an abundant number, since it is smaller than the sum of its proper divisors (2067307392).

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

1125276288 is a wasteful number, since it uses less digits than its factorization.

1125276288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3034 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 1125276288 is about 33545.1380679824. The cubic root of 1125276288 is about 1040.1270456236.

The spelling of 1125276288 in words is "one billion, one hundred twenty-five million, two hundred seventy-six thousand, two hundred eighty-eight".