2305531252217 has 2 divisors, whose sum is σ = 2305531252218. Its totient is φ = 2305531252216.

The previous prime is 2305531252061. The next prime is 2305531252231. The reversal of 2305531252217 is 7122521355032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287553167616 + 1017978084601 = 1134704^2 + 1008949^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305531252217 - 2¹⁸ = 2305530990073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2305551252217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152765626108 + 1152765626109.

It is an arithmetic number, because the mean of its divisors is an integer number (1152765626109).

Almost surely, 2^{2305531252217} is an apocalyptic number.

It is an amenable number.

2305531252217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305531252217 is an equidigital number, since it uses as much as digits as its factorization.

2305531252217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 2305531252217 in words is "two trillion, three hundred five billion, five hundred thirty-one million, two hundred fifty-two thousand, two hundred seventeen".