20522450357 has 2 divisors, whose sum is σ = 20522450358. Its totient is φ = 20522450356.

The previous prime is 20522450233. The next prime is 20522450359. The reversal of 20522450357 is 75305422502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20131636996 + 390813361 = 141886^2 + 19769^2 .

It is a cyclic number.

It is not a de Polignac number, because 20522450357 - 2¹⁶ = 20522384821 is a prime.

Together with 20522450359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20522450359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261225178 + 10261225179.

It is an arithmetic number, because the mean of its divisors is an integer number (10261225179).

Almost surely, 2^20522450357 is an apocalyptic number.

It is an amenable number.

20522450357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522450357 is an equidigital number, since it uses as much as digits as its factorization.

20522450357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 35.

Adding to 20522450357 its reverse (75305422502), we get a palindrome (95827872859).

The spelling of 20522450357 in words is "twenty billion, five hundred twenty-two million, four hundred fifty thousand, three hundred fifty-seven".