255440258 has 8 divisors (see below), whose sum is σ = 383264652. Its totient is φ = 127685376.

The previous prime is 255440257. The next prime is 255440281. The reversal of 255440258 is 852044552.

It can be written as a sum of positive squares in 2 ways, for example, as 247527289 + 7912969 = 15733^2 + 2813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (255440257) 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, 6935 + ... + 23642.

Almost surely, 2^255440258 is an apocalyptic number.

255440258 is a deficient number, since it is larger than the sum of its proper divisors (127824394).

255440258 is a wasteful number, since it uses less digits than its factorization.

255440258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34756.

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 255440258 is about 15982.4984905365. The cubic root of 255440258 is about 634.4973044232.

The spelling of 255440258 in words is "two hundred fifty-five million, four hundred forty thousand, two hundred fifty-eight".