256265741 has 2 divisors, whose sum is σ = 256265742. Its totient is φ = 256265740.

The previous prime is 256265717. The next prime is 256265743. The reversal of 256265741 is 147562652.

256265741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181010116 + 75255625 = 13454^2 + 8675^2 .

It is a cyclic number.

It is not a de Polignac number, because 256265741 - 2¹⁰ = 256264717 is a prime.

It is a Sophie Germain prime.

Together with 256265743, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256265695 and 256265704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256265743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128132870 + 128132871.

It is an arithmetic number, because the mean of its divisors is an integer number (128132871).

Almost surely, 2^256265741 is an apocalyptic number.

It is an amenable number.

256265741 is a deficient number, since it is larger than the sum of its proper divisors (1).

256265741 is an equidigital number, since it uses as much as digits as its factorization.

256265741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 256265741 is about 16008.3022522690. The cubic root of 256265741 is about 635.1800518624.

The spelling of 256265741 in words is "two hundred fifty-six million, two hundred sixty-five thousand, seven hundred forty-one".