20525534130337 has 2 divisors, whose sum is σ = 20525534130338. Its totient is φ = 20525534130336.

The previous prime is 20525534130313. The next prime is 20525534130401. The reversal of 20525534130337 is 73303143552502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20480729518096 + 44804612241 = 4525564^2 + 211671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20525534130337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20525534130293 and 20525534130302.

It is not a weakly prime, because it can be changed into another prime (20525534130307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262767065168 + 10262767065169.

It is an arithmetic number, because the mean of its divisors is an integer number (10262767065169).

Almost surely, 2^{20525534130337} is an apocalyptic number.

It is an amenable number.

20525534130337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525534130337 is an equidigital number, since it uses as much as digits as its factorization.

20525534130337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134000, while the sum is 43.

Adding to 20525534130337 its reverse (73303143552502), we get a palindrome (93828677682839).

The spelling of 20525534130337 in words is "twenty trillion, five hundred twenty-five billion, five hundred thirty-four million, one hundred thirty thousand, three hundred thirty-seven".