256753429 has 2 divisors, whose sum is σ = 256753430. Its totient is φ = 256753428.

The previous prime is 256753423. The next prime is 256753457. The reversal of 256753429 is 924357652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256736529 + 16900 = 16023^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 256753429 - 2⁹ = 256752917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256753423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128376714 + 128376715.

It is an arithmetic number, because the mean of its divisors is an integer number (128376715).

Almost surely, 2^256753429 is an apocalyptic number.

It is an amenable number.

256753429 is a deficient number, since it is larger than the sum of its proper divisors (1).

256753429 is an equidigital number, since it uses as much as digits as its factorization.

256753429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The square root of 256753429 is about 16023.5273582317. The cubic root of 256753429 is about 635.5827242243.

The spelling of 256753429 in words is "two hundred fifty-six million, seven hundred fifty-three thousand, four hundred twenty-nine".