1128347725 has 6 divisors (see below), whose sum is σ = 1399151210. Its totient is φ = 902678160.

The previous prime is 1128347723. The next prime is 1128347729. The reversal of 1128347725 is 5277438211.

It can be written as a sum of positive squares in 3 ways, for example, as 328329 + 1128019396 = 573^2 + 33586^2 .

It is not a de Polignac number, because 1128347725 - 2¹ = 1128347723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128347723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22566930 + ... + 22566979.

Almost surely, 2^1128347725 is an apocalyptic number.

It is an amenable number.

1128347725 is a deficient number, since it is larger than the sum of its proper divisors (270803485).

1128347725 is an equidigital number, since it uses as much as digits as its factorization.

1128347725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45133919 (or 45133914 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 1128347725 is about 33590.8875292095. The cubic root of 1128347725 is about 1041.0725267467.

The spelling of 1128347725 in words is "one billion, one hundred twenty-eight million, three hundred forty-seven thousand, seven hundred twenty-five".