255892409 has 2 divisors, whose sum is σ = 255892410. Its totient is φ = 255892408.

The previous prime is 255892379. The next prime is 255892421. The reversal of 255892409 is 904298552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188980009 + 66912400 = 13747^2 + 8180^2 .

It is a cyclic number.

It is not a de Polignac number, because 255892409 - 2¹⁶ = 255826873 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255892409.

It is not a weakly prime, because it can be changed into another prime (255892009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127946204 + 127946205.

It is an arithmetic number, because the mean of its divisors is an integer number (127946205).

Almost surely, 2^255892409 is an apocalyptic number.

It is an amenable number.

255892409 is a deficient number, since it is larger than the sum of its proper divisors (1).

255892409 is an equidigital number, since it uses as much as digits as its factorization.

255892409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 255892409 is about 15996.6374279097. The cubic root of 255892409 is about 634.8714551630.

The spelling of 255892409 in words is "two hundred fifty-five million, eight hundred ninety-two thousand, four hundred nine".