1125105125 has 8 divisors (see below), whose sum is σ = 1404131352. Its totient is φ = 900084000.

The previous prime is 1125105097. The next prime is 1125105151. The reversal of 1125105125 is 5215015211.

It can be written as a sum of positive squares in 4 ways, for example, as 32273761 + 1092831364 = 5681^2 + 33058^2 .

It is not a de Polignac number, because 1125105125 - 2⁶ = 1125105061 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 1125105125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500296 + ... + 4500545.

It is an arithmetic number, because the mean of its divisors is an integer number (175516419).

Almost surely, 2^1125105125 is an apocalyptic number.

It is an amenable number.

1125105125 is a deficient number, since it is larger than the sum of its proper divisors (279026227).

1125105125 is an frugal number, since it uses more digits than its factorization.

1125105125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000856 (or 9000846 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1125105125 is about 33542.5867368633. The cubic root of 1125105125 is about 1040.0743058965.

It can be divided in two parts, 1125 and 105125, that multiplied together give a square (118265625 = 10875²).

The spelling of 1125105125 in words is "one billion, one hundred twenty-five million, one hundred five thousand, one hundred twenty-five".