255522745 has 4 divisors (see below), whose sum is σ = 306627300. Its totient is φ = 204418192.

The previous prime is 255522737. The next prime is 255522749. The reversal of 255522745 is 547225552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154480041 + 101042704 = 12429^2 + 10052^2 .

It is a cyclic number.

It is not a de Polignac number, because 255522745 - 2³ = 255522737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255522749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25552270 + ... + 25552279.

It is an arithmetic number, because the mean of its divisors is an integer number (76656825).

Almost surely, 2^255522745 is an apocalyptic number.

It is an amenable number.

255522745 is a deficient number, since it is larger than the sum of its proper divisors (51104555).

255522745 is an equidigital number, since it uses as much as digits as its factorization.

255522745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51104554.

The product of its digits is 140000, while the sum is 37.

The square root of 255522745 is about 15985.0788237031. The cubic root of 255522745 is about 634.5655945548.

The spelling of 255522745 in words is "two hundred fifty-five million, five hundred twenty-two thousand, seven hundred forty-five".