255140020 has 24 divisors (see below), whose sum is σ = 543793824. Its totient is φ = 100532256.

The previous prime is 255139987. The next prime is 255140021. The reversal of 255140020 is 20041552.

255140020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 255140020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255140021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93862 + ... + 96541.

It is an arithmetic number, because the mean of its divisors is an integer number (22658076).

Almost surely, 2^255140020 is an apocalyptic number.

255140020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255140020 is an abundant number, since it is smaller than the sum of its proper divisors (288653804).

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

255140020 is a wasteful number, since it uses less digits than its factorization.

255140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190479 (or 190477 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 255140020 is about 15973.1030172600. The cubic root of 255140020 is about 634.2486162846.

Adding to 255140020 its reverse (20041552), we get a palindrome (275181572).

The spelling of 255140020 in words is "two hundred fifty-five million, one hundred forty thousand, twenty".