1125636912 has 200 divisors, whose sum is σ = 3632468400. Its totient is φ = 334430208.

The previous prime is 1125636881. The next prime is 1125636923. The reversal of 1125636912 is 2196365211.

1125636912 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 636 + 9 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 417264 + ... + 419952.

It is an arithmetic number, because the mean of its divisors is an integer number (18162342).

Almost surely, 2^1125636912 is an apocalyptic number.

1125636912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125636912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816234200).

1125636912 is an abundant number, since it is smaller than the sum of its proper divisors (2506831488).

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

1125636912 is a wasteful number, since it uses less digits than its factorization.

1125636912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2730 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 1125636912 is about 33550.5128425781. The cubic root of 1125636912 is about 1040.2381456610.

The spelling of 1125636912 in words is "one billion, one hundred twenty-five million, six hundred thirty-six thousand, nine hundred twelve".