255425173 has 2 divisors, whose sum is σ = 255425174. Its totient is φ = 255425172.

The previous prime is 255425147. The next prime is 255425207. The reversal of 255425173 is 371524552.

It is an a-pointer prime, because the next prime (255425207) can be obtained adding 255425173 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147306769 + 108118404 = 12137^2 + 10398^2 .

It is a cyclic number.

It is not a de Polignac number, because 255425173 - 2¹⁷ = 255294101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255425273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127712586 + 127712587.

It is an arithmetic number, because the mean of its divisors is an integer number (127712587).

Almost surely, 2^255425173 is an apocalyptic number.

It is an amenable number.

255425173 is a deficient number, since it is larger than the sum of its proper divisors (1).

255425173 is an equidigital number, since it uses as much as digits as its factorization.

255425173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 255425173 is about 15982.0265611092. The cubic root of 255425173 is about 634.4848141181.

The spelling of 255425173 in words is "two hundred fifty-five million, four hundred twenty-five thousand, one hundred seventy-three".