1117125745 has 4 divisors (see below), whose sum is σ = 1340550900. Its totient is φ = 893700592.

The previous prime is 1117125727. The next prime is 1117125749. The reversal of 1117125745 is 5475217111.

1117125745 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 314140176 + 802985569 = 17724^2 + 28337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117125745 - 2¹¹ = 1117123697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1117125745.

It is not an unprimeable number, because it can be changed into a prime (1117125749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111712570 + ... + 111712579.

It is an arithmetic number, because the mean of its divisors is an integer number (335137725).

Almost surely, 2^1117125745 is an apocalyptic number.

It is an amenable number.

1117125745 is a deficient number, since it is larger than the sum of its proper divisors (223425155).

1117125745 is an equidigital number, since it uses as much as digits as its factorization.

1117125745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223425154.

The product of its digits is 9800, while the sum is 34.

The square root of 1117125745 is about 33423.4310776138. The cubic root of 1117125745 is about 1037.6096931486.

The spelling of 1117125745 in words is "one billion, one hundred seventeen million, one hundred twenty-five thousand, seven hundred forty-five".