256825367 has 2 divisors, whose sum is σ = 256825368. Its totient is φ = 256825366.

The previous prime is 256825357. The next prime is 256825381. The reversal of 256825367 is 763528652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256825367 - 2¹⁰ = 256824343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256825357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128412683 + 128412684.

It is an arithmetic number, because the mean of its divisors is an integer number (128412684).

Almost surely, 2^256825367 is an apocalyptic number.

256825367 is a deficient number, since it is larger than the sum of its proper divisors (1).

256825367 is an equidigital number, since it uses as much as digits as its factorization.

256825367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The square root of 256825367 is about 16025.7719626856. The cubic root of 256825367 is about 635.6420785506.

The spelling of 256825367 in words is "two hundred fifty-six million, eight hundred twenty-five thousand, three hundred sixty-seven".