1125347805 has 12 divisors (see below), whose sum is σ = 1950602940. Its totient is φ = 600185472.

The previous prime is 1125347803. The next prime is 1125347819. The reversal of 1125347805 is 5087435211.

1125347805 is a `hidden beast` number, since 112 + 534 + 7 + 8 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 401361156 + 723986649 = 20034^2 + 26907^2 .

It is not a de Polignac number, because 1125347805 - 2¹ = 1125347803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1125347805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125347801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12503820 + ... + 12503909.

It is an arithmetic number, because the mean of its divisors is an integer number (162550245).

Almost surely, 2^1125347805 is an apocalyptic number.

1125347805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125347805 is a deficient number, since it is larger than the sum of its proper divisors (825255135).

1125347805 is a wasteful number, since it uses less digits than its factorization.

1125347805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007740 (or 25007737 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1125347805 is about 33546.2040326473. The cubic root of 1125347805 is about 1040.1490802684.

The spelling of 1125347805 in words is "one billion, one hundred twenty-five million, three hundred forty-seven thousand, eight hundred five".