1152305305 has 8 divisors (see below), whose sum is σ = 1464105672. Its totient is φ = 867618048.

The previous prime is 1152305303. The next prime is 1152305333. The reversal of 1152305305 is 5035032511.

It can be written as a sum of positive squares in 4 ways, for example, as 486820096 + 665485209 = 22064^2 + 25797^2 .

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 1152305305 - 2¹ = 1152305303 is a prime.

It is a super-2 number, since 2×1152305305² = 2655615031862286050, which contains 22 as substring.

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 1152305305.

It is not an unprimeable number, because it can be changed into a prime (1152305303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6778182 + ... + 6778351.

It is an arithmetic number, because the mean of its divisors is an integer number (183013209).

Almost surely, 2^1152305305 is an apocalyptic number.

It is an amenable number.

1152305305 is a deficient number, since it is larger than the sum of its proper divisors (311800367).

1152305305 is a wasteful number, since it uses less digits than its factorization.

1152305305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556555.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1152305305 is about 33945.6227664186. The cubic root of 1152305305 is about 1048.3891566162.

Adding to 1152305305 its reverse (5035032511), we get a palindrome (6187337816).

The spelling of 1152305305 in words is "one billion, one hundred fifty-two million, three hundred five thousand, three hundred five".