63265722257 has 2 divisors, whose sum is σ = 63265722258. Its totient is φ = 63265722256.

The previous prime is 63265722203. The next prime is 63265722323. The reversal of 63265722257 is 75222756236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50141957776 + 13123764481 = 223924^2 + 114559^2 .

It is a cyclic number.

It is not a de Polignac number, because 63265722257 - 2¹⁸ = 63265460113 is a prime.

It is a super-2 number, since 2×63265722257² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63265722757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31632861128 + 31632861129.

It is an arithmetic number, because the mean of its divisors is an integer number (31632861129).

Almost surely, 2^63265722257 is an apocalyptic number.

It is an amenable number.

63265722257 is a deficient number, since it is larger than the sum of its proper divisors (1).

63265722257 is an equidigital number, since it uses as much as digits as its factorization.

63265722257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 47.

The spelling of 63265722257 in words is "sixty-three billion, two hundred sixty-five million, seven hundred twenty-two thousand, two hundred fifty-seven".