648925302517 has 2 divisors, whose sum is σ = 648925302518. Its totient is φ = 648925302516.

The previous prime is 648925302479. The next prime is 648925302527. The reversal of 648925302517 is 715203529846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648925302481 + 36 = 805559^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648925302517 is a prime.

It is a super-2 number, since 2×648925302517² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648925302527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324462651258 + 324462651259.

It is an arithmetic number, because the mean of its divisors is an integer number (324462651259).

It is a 2-persistent number, because it is pandigital, and so is 2⋅648925302517 = 1297850605034, but 3⋅648925302517 = 1946775907551 is not.

Almost surely, 2^648925302517 is an apocalyptic number.

It is an amenable number.

648925302517 is a deficient number, since it is larger than the sum of its proper divisors (1).

648925302517 is an equidigital number, since it uses as much as digits as its factorization.

648925302517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 648925302517 in words is "six hundred forty-eight billion, nine hundred twenty-five million, three hundred two thousand, five hundred seventeen".