255510452240 has 80 divisors (see below), whose sum is σ = 595623544320. Its totient is φ = 101935895040.

The previous prime is 255510452191. The next prime is 255510452339. The reversal of 255510452240 is 42254015552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 255510452240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55652345 + ... + 55656935.

It is an arithmetic number, because the mean of its divisors is an integer number (7445294304).

Almost surely, 2^255510452240 is an apocalyptic number.

255510452240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255510452240 is an abundant number, since it is smaller than the sum of its proper divisors (340113092080).

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

255510452240 is a wasteful number, since it uses less digits than its factorization.

255510452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280 (or 6274 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 255510452240 its reverse (42254015552), we get a palindrome (297764467792).

The spelling of 255510452240 in words is "two hundred fifty-five billion, five hundred ten million, four hundred fifty-two thousand, two hundred forty".