1125717784 has 16 divisors (see below), whose sum is σ = 2111947200. Its totient is φ = 562531872.

The previous prime is 1125717779. The next prime is 1125717809. The reversal of 1125717784 is 4877175211.

It is a self number, because there is not a number n which added to its sum of digits gives 1125717784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25927 + ... + 54070.

It is an arithmetic number, because the mean of its divisors is an integer number (131996700).

Almost surely, 2^1125717784 is an apocalyptic number.

It is an amenable number.

1125717784 is a deficient number, since it is larger than the sum of its proper divisors (986229416).

1125717784 is a wasteful number, since it uses less digits than its factorization.

1125717784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81762 (or 81758 counting only the distinct ones).

The product of its digits is 109760, while the sum is 43.

The square root of 1125717784 is about 33551.7180484100. The cubic root of 1125717784 is about 1040.2630572240.

The spelling of 1125717784 in words is "one billion, one hundred twenty-five million, seven hundred seventeen thousand, seven hundred eighty-four".