256154263 has 2 divisors, whose sum is σ = 256154264. Its totient is φ = 256154262.

The previous prime is 256154233. The next prime is 256154309. The reversal of 256154263 is 362451652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256154263 - 2⁵ = 256154231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256154203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128077131 + 128077132.

It is an arithmetic number, because the mean of its divisors is an integer number (128077132).

Almost surely, 2^256154263 is an apocalyptic number.

256154263 is a deficient number, since it is larger than the sum of its proper divisors (1).

256154263 is an equidigital number, since it uses as much as digits as its factorization.

256154263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 256154263 is about 16004.8199927397. The cubic root of 256154263 is about 635.0879354113.

The spelling of 256154263 in words is "two hundred fifty-six million, one hundred fifty-four thousand, two hundred sixty-three".