245153415257 has 2 divisors, whose sum is σ = 245153415258. Its totient is φ = 245153415256.

The previous prime is 245153415233. The next prime is 245153415263. The reversal of 245153415257 is 752514351542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158353060096 + 86800355161 = 397936^2 + 294619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245153415257 is a prime.

It is not a weakly prime, because it can be changed into another prime (245153415277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122576707628 + 122576707629.

It is an arithmetic number, because the mean of its divisors is an integer number (122576707629).

Almost surely, 2^245153415257 is an apocalyptic number.

It is an amenable number.

245153415257 is a deficient number, since it is larger than the sum of its proper divisors (1).

245153415257 is an equidigital number, since it uses as much as digits as its factorization.

245153415257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840000, while the sum is 44.

Adding to 245153415257 its reverse (752514351542), we get a palindrome (997667766799).

The spelling of 245153415257 in words is "two hundred forty-five billion, one hundred fifty-three million, four hundred fifteen thousand, two hundred fifty-seven".