255240400 has 60 divisors (see below), whose sum is σ = 618022944. Its totient is φ = 101296000.

The previous prime is 255240379. The next prime is 255240437. The reversal of 255240400 is 4042552.

255240400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49965 + ... + 54835.

Almost surely, 2^255240400 is an apocalyptic number.

255240400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255240400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309011472).

255240400 is an abundant number, since it is smaller than the sum of its proper divisors (362782544).

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

255240400 is a wasteful number, since it uses less digits than its factorization.

255240400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 255240400 is about 15976.2448654244. The cubic root of 255240400 is about 634.3317830735.

Adding to 255240400 its reverse (4042552), we get a palindrome (259282952).

It can be divided in two parts, 25 and 5240400, that added together give a palindrome (5240425).

The spelling of 255240400 in words is "two hundred fifty-five million, two hundred forty thousand, four hundred".