255140224 has 32 divisors (see below), whose sum is σ = 512978400. Its totient is φ = 126392832.

The previous prime is 255140213. The next prime is 255140239. The reversal of 255140224 is 422041552.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4809 + ... + 23095.

It is an arithmetic number, because the mean of its divisors is an integer number (16030575).

Almost surely, 2^255140224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255140224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256489200).

255140224 is an abundant number, since it is smaller than the sum of its proper divisors (257838176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255140224 is a wasteful number, since it uses less digits than its factorization.

255140224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18410 (or 18398 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 255140224 is about 15973.1094029935. The cubic root of 255140224 is about 634.2487853247.

Adding to 255140224 its reverse (422041552), we get a palindrome (677181776).

The spelling of 255140224 in words is "two hundred fifty-five million, one hundred forty thousand, two hundred twenty-four".