256248810029 has 2 divisors, whose sum is σ = 256248810030. Its totient is φ = 256248810028.

The previous prime is 256248810023. The next prime is 256248810047. The reversal of 256248810029 is 920018842652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251958822025 + 4289988004 = 501955^2 + 65498^2 .

It is a cyclic number.

It is not a de Polignac number, because 256248810029 - 2¹² = 256248805933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256248810023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128124405014 + 128124405015.

It is an arithmetic number, because the mean of its divisors is an integer number (128124405015).

Almost surely, 2^256248810029 is an apocalyptic number.

It is an amenable number.

256248810029 is a deficient number, since it is larger than the sum of its proper divisors (1).

256248810029 is an equidigital number, since it uses as much as digits as its factorization.

256248810029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 256248810029 in words is "two hundred fifty-six billion, two hundred forty-eight million, eight hundred ten thousand, twenty-nine".