1125856237 has 12 divisors (see below), whose sum is σ = 1239493500. Its totient is φ = 1021866560.

The previous prime is 1125856223. The next prime is 1125856289. The reversal of 1125856237 is 7326585211.

It can be written as a sum of positive squares in 2 ways, for example, as 540748516 + 585107721 = 23254^2 + 24189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1125856237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125856237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125856217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71889 + ... + 86137.

It is an arithmetic number, because the mean of its divisors is an integer number (103291125).

Almost surely, 2^1125856237 is an apocalyptic number.

It is an amenable number.

1125856237 is a deficient number, since it is larger than the sum of its proper divisors (113637263).

1125856237 is a wasteful number, since it uses less digits than its factorization.

1125856237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14924 (or 14913 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 1125856237 is about 33553.7812623257. The cubic root of 1125856237 is about 1040.3057030923.

The spelling of 1125856237 in words is "one billion, one hundred twenty-five million, eight hundred fifty-six thousand, two hundred thirty-seven".