1305002245 has 4 divisors (see below), whose sum is σ = 1566002700. Its totient is φ = 1044001792.

The previous prime is 1305002201. The next prime is 1305002261. The reversal of 1305002245 is 5422005031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5422005031 = 127 ⋅42692953.

It can be written as a sum of positive squares in 2 ways, for example, as 247842049 + 1057160196 = 15743^2 + 32514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305002245 - 2²⁵ = 1271447813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130500220 + ... + 130500229.

It is an arithmetic number, because the mean of its divisors is an integer number (391500675).

Almost surely, 2^1305002245 is an apocalyptic number.

It is an amenable number.

1305002245 is a deficient number, since it is larger than the sum of its proper divisors (261000455).

1305002245 is an equidigital number, since it uses as much as digits as its factorization.

1305002245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261000454.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1305002245 is about 36124.8148092139. The cubic root of 1305002245 is about 1092.7909412998.

Adding to 1305002245 its reverse (5422005031), we get a palindrome (6727007276).

The spelling of 1305002245 in words is "one billion, three hundred five million, two thousand, two hundred forty-five".