1125718828105 has 8 divisors (see below), whose sum is σ = 1351961757000. Its totient is φ = 899842286976.

The previous prime is 1125718828097. The next prime is 1125718828109. The reversal of 1125718828105 is 5018288175211.

It can be written as a sum of positive squares in 4 ways, for example, as 100343866441 + 1025374961664 = 316771^2 + 1012608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125718828105 - 2³ = 1125718828097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125718828109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91590180 + ... + 91602469.

It is an arithmetic number, because the mean of its divisors is an integer number (168995219625).

Almost surely, 2^{1125718828105} is an apocalyptic number.

It is an amenable number.

1125718828105 is a deficient number, since it is larger than the sum of its proper divisors (226242928895).

1125718828105 is a wasteful number, since it uses less digits than its factorization.

1125718828105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183193883.

The product of its (nonzero) digits is 358400, while the sum is 49.

The spelling of 1125718828105 in words is "one trillion, one hundred twenty-five billion, seven hundred eighteen million, eight hundred twenty-eight thousand, one hundred five".