505225205213 has 2 divisors, whose sum is σ = 505225205214. Its totient is φ = 505225205212.

The previous prime is 505225205209. The next prime is 505225205239. The reversal of 505225205213 is 312502522505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416538578404 + 88686626809 = 645398^2 + 297803^2 .

It is a cyclic number.

It is not a de Polignac number, because 505225205213 - 2² = 505225205209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505225205213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505225205413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252612602606 + 252612602607.

It is an arithmetic number, because the mean of its divisors is an integer number (252612602607).

Almost surely, 2^505225205213 is an apocalyptic number.

It is an amenable number.

505225205213 is a deficient number, since it is larger than the sum of its proper divisors (1).

505225205213 is an equidigital number, since it uses as much as digits as its factorization.

505225205213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 505225205213 its reverse (312502522505), we get a palindrome (817727727718).

The spelling of 505225205213 in words is "five hundred five billion, two hundred twenty-five million, two hundred five thousand, two hundred thirteen".