1145525305 has 16 divisors (see below), whose sum is σ = 1403424144. Its totient is φ = 897295360.

The previous prime is 1145525287. The next prime is 1145525321. The reversal of 1145525305 is 5035255411.

It can be written as a sum of positive squares in 8 ways, for example, as 88755241 + 1056770064 = 9421^2 + 32508^2 .

It is not a de Polignac number, because 1145525305 - 2²⁹ = 608654393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 133917 + ... + 142213.

It is an arithmetic number, because the mean of its divisors is an integer number (87714009).

Almost surely, 2^1145525305 is an apocalyptic number.

It is an amenable number.

1145525305 is a deficient number, since it is larger than the sum of its proper divisors (257898839).

1145525305 is an equidigital number, since it uses as much as digits as its factorization.

1145525305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1145525305 is about 33845.6098334777. The cubic root of 1145525305 is about 1046.3289198676.

The spelling of 1145525305 in words is "one billion, one hundred forty-five million, five hundred twenty-five thousand, three hundred five".