255530025558 has 48 divisors (see below), whose sum is σ = 587955691440. Its totient is φ = 79928368128.

The previous prime is 255530025533. The next prime is 255530025577. The reversal of 255530025558 is 855520035552.

255530025558 is a `hidden beast` number, since 25 + 5 + 53 + 0 + 0 + 25 + 558 = 666.

It is a super-3 number, since 3×255530025558³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1135848 + ... + 1342091.

It is an arithmetic number, because the mean of its divisors is an integer number (12249076905).

Almost surely, 2^255530025558 is an apocalyptic number.

255530025558 is an abundant number, since it is smaller than the sum of its proper divisors (332425665882).

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

255530025558 is a wasteful number, since it uses less digits than its factorization.

255530025558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478301 (or 2478298 counting only the distinct ones).

The product of its (nonzero) digits is 1500000, while the sum is 45.

The spelling of 255530025558 in words is "two hundred fifty-five billion, five hundred thirty million, twenty-five thousand, five hundred fifty-eight".