256050709 has 2 divisors, whose sum is σ = 256050710. Its totient is φ = 256050708.

The previous prime is 256050673. The next prime is 256050761. The reversal of 256050709 is 907050652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255200625 + 850084 = 15975^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 256050709 - 2⁷ = 256050581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256050409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128025354 + 128025355.

It is an arithmetic number, because the mean of its divisors is an integer number (128025355).

Almost surely, 2^256050709 is an apocalyptic number.

It is an amenable number.

256050709 is a deficient number, since it is larger than the sum of its proper divisors (1).

256050709 is an equidigital number, since it uses as much as digits as its factorization.

256050709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 256050709 is about 16001.5845777848. The cubic root of 256050709 is about 635.0023427694.

The spelling of 256050709 in words is "two hundred fifty-six million, fifty thousand, seven hundred nine".