255405253 has 2 divisors, whose sum is σ = 255405254. Its totient is φ = 255405252.

The previous prime is 255405211. The next prime is 255405257. The reversal of 255405253 is 352504552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192155044 + 63250209 = 13862^2 + 7953^2 .

It is a cyclic number.

It is not a de Polignac number, because 255405253 - 2⁹ = 255404741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255405257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127702626 + 127702627.

It is an arithmetic number, because the mean of its divisors is an integer number (127702627).

Almost surely, 2^255405253 is an apocalyptic number.

It is an amenable number.

255405253 is a deficient number, since it is larger than the sum of its proper divisors (1).

255405253 is an equidigital number, since it uses as much as digits as its factorization.

255405253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 255405253 is about 15981.4033488927. The cubic root of 255405253 is about 634.4683197036.

The spelling of 255405253 in words is "two hundred fifty-five million, four hundred five thousand, two hundred fifty-three".