256052260553 has 2 divisors, whose sum is σ = 256052260554. Its totient is φ = 256052260552.

The previous prime is 256052260507. The next prime is 256052260561. The reversal of 256052260553 is 355062250652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255218956864 + 833303689 = 505192^2 + 28867^2 .

It is a cyclic number.

It is not a de Polignac number, because 256052260553 - 2¹⁴ = 256052244169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256052260553.

It is not a weakly prime, because it can be changed into another prime (256052200553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128026130276 + 128026130277.

It is an arithmetic number, because the mean of its divisors is an integer number (128026130277).

Almost surely, 2^256052260553 is an apocalyptic number.

It is an amenable number.

256052260553 is a deficient number, since it is larger than the sum of its proper divisors (1).

256052260553 is an equidigital number, since it uses as much as digits as its factorization.

256052260553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 41.

Subtracting 256052260553 from its reverse (355062250652), we obtain a palindrome (99009990099).

The spelling of 256052260553 in words is "two hundred fifty-six billion, fifty-two million, two hundred sixty thousand, five hundred fifty-three".