502561625257 has 2 divisors, whose sum is σ = 502561625258. Its totient is φ = 502561625256.

The previous prime is 502561625123. The next prime is 502561625287. The reversal of 502561625257 is 752526165205.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269017531561 + 233544093696 = 518669^2 + 483264^2 .

It is a cyclic number.

It is not a de Polignac number, because 502561625257 - 2¹⁹ = 502561100969 is a prime.

It is not a weakly prime, because it can be changed into another prime (502561625287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251280812628 + 251280812629.

It is an arithmetic number, because the mean of its divisors is an integer number (251280812629).

Almost surely, 2^502561625257 is an apocalyptic number.

It is an amenable number.

502561625257 is a deficient number, since it is larger than the sum of its proper divisors (1).

502561625257 is an equidigital number, since it uses as much as digits as its factorization.

502561625257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 502561625257 in words is "five hundred two billion, five hundred sixty-one million, six hundred twenty-five thousand, two hundred fifty-seven".