256252783 has 2 divisors, whose sum is σ = 256252784. Its totient is φ = 256252782.

The previous prime is 256252771. The next prime is 256252807. The reversal of 256252783 is 387252652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256252783 - 2⁵ = 256252751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256252483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128126391 + 128126392.

It is an arithmetic number, because the mean of its divisors is an integer number (128126392).

Almost surely, 2^256252783 is an apocalyptic number.

256252783 is a deficient number, since it is larger than the sum of its proper divisors (1).

256252783 is an equidigital number, since it uses as much as digits as its factorization.

256252783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 40.

The square root of 256252783 is about 16007.8975196620. The cubic root of 256252783 is about 635.1693457859.

The spelling of 256252783 in words is "two hundred fifty-six million, two hundred fifty-two thousand, seven hundred eighty-three".