255220745 has 16 divisors (see below), whose sum is σ = 349226640. Its totient is φ = 177383424.

The previous prime is 255220741. The next prime is 255220751. The reversal of 255220745 is 547022552.

255220745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 6086089 + 249134656 = 2467^2 + 15784^2 .

It is a cyclic number.

It is not a de Polignac number, because 255220745 - 2² = 255220741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255220741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114380 + ... + 116589.

It is an arithmetic number, because the mean of its divisors is an integer number (21826665).

Almost surely, 2^255220745 is an apocalyptic number.

It is an amenable number.

255220745 is a deficient number, since it is larger than the sum of its proper divisors (94005895).

255220745 is a wasteful number, since it uses less digits than its factorization.

255220745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231004.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 255220745 is about 15975.6297215478. The cubic root of 255220745 is about 634.3155002395.

The spelling of 255220745 in words is "two hundred fifty-five million, two hundred twenty thousand, seven hundred forty-five".