255742633 has 2 divisors, whose sum is σ = 255742634. Its totient is φ = 255742632.

The previous prime is 255742621. The next prime is 255742637. The reversal of 255742633 is 336247552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230219929 + 25522704 = 15173^2 + 5052^2 .

It is a cyclic number.

It is not a de Polignac number, because 255742633 - 2¹⁷ = 255611561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255742592 and 255742601.

It is not a weakly prime, because it can be changed into another prime (255742637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127871316 + 127871317.

It is an arithmetic number, because the mean of its divisors is an integer number (127871317).

Almost surely, 2^255742633 is an apocalyptic number.

It is an amenable number.

255742633 is a deficient number, since it is larger than the sum of its proper divisors (1).

255742633 is an equidigital number, since it uses as much as digits as its factorization.

255742633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 37.

The square root of 255742633 is about 15991.9552588169. The cubic root of 255742633 is about 634.7475657707.

The spelling of 255742633 in words is "two hundred fifty-five million, seven hundred forty-two thousand, six hundred thirty-three".