255612440 has 32 divisors (see below), whose sum is σ = 579530160. Its totient is φ = 101462400.

The previous prime is 255612431. The next prime is 255612451. The reversal of 255612440 is 44216552.

255612440 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 7 ways as a sum of consecutive naturals, for example, 19151 + ... + 29630.

Almost surely, 2^255612440 is an apocalyptic number.

255612440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255612440 is an abundant number, since it is smaller than the sum of its proper divisors (323917720).

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

255612440 is a wasteful number, since it uses less digits than its factorization.

255612440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48923 (or 48919 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 255612440 is about 15987.8841627027. The cubic root of 255612440 is about 634.6398354376.

Adding to 255612440 its reverse (44216552), we get a palindrome (299828992).

The spelling of 255612440 in words is "two hundred fifty-five million, six hundred twelve thousand, four hundred forty".