8545245450257 has 2 divisors, whose sum is σ = 8545245450258. Its totient is φ = 8545245450256.

The previous prime is 8545245450229. The next prime is 8545245450277. The reversal of 8545245450257 is 7520545425458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7520516430736 + 1024729019521 = 2742356^2 + 1012289^2 .

It is a cyclic number.

It is not a de Polignac number, because 8545245450257 - 2²⁴ = 8545228673041 is a prime.

It is a super-2 number, since 2×8545245450257² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8545245450277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4272622725128 + 4272622725129.

It is an arithmetic number, because the mean of its divisors is an integer number (4272622725129).

Almost surely, 2^{8545245450257} is an apocalyptic number.

It is an amenable number.

8545245450257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8545245450257 is an equidigital number, since it uses as much as digits as its factorization.

8545245450257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800000, while the sum is 56.

The spelling of 8545245450257 in words is "eight trillion, five hundred forty-five billion, two hundred forty-five million, four hundred fifty thousand, two hundred fifty-seven".