20525302313 has 2 divisors, whose sum is σ = 20525302314. Its totient is φ = 20525302312.

The previous prime is 20525302309. The next prime is 20525302339. The reversal of 20525302313 is 31320352502.

It is an a-pointer prime, because the next prime (20525302339) can be obtained adding 20525302313 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20514259984 + 11042329 = 143228^2 + 3323^2 .

It is a cyclic number.

It is not a de Polignac number, because 20525302313 - 2² = 20525302309 is a prime.

It is not a weakly prime, because it can be changed into another prime (20525302013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262651156 + 10262651157.

It is an arithmetic number, because the mean of its divisors is an integer number (10262651157).

Almost surely, 2^20525302313 is an apocalyptic number.

It is an amenable number.

20525302313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525302313 is an equidigital number, since it uses as much as digits as its factorization.

20525302313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 20525302313 its reverse (31320352502), we get a palindrome (51845654815).

The spelling of 20525302313 in words is "twenty billion, five hundred twenty-five million, three hundred two thousand, three hundred thirteen".