505231206255 has 48 divisors (see below), whose sum is σ = 914853101760. Its totient is φ = 257446785024.

The previous prime is 505231206247. The next prime is 505231206269. The reversal of 505231206255 is 552602132505.

505231206255 is a `hidden beast` number, since 5 + 0 + 5 + 2 + 3 + 1 + 20 + 625 + 5 = 666.

It is not a de Polignac number, because 505231206255 - 2³ = 505231206247 is a prime.

It is a super-2 number, since 2×505231206255² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 629391 + ... + 1185999.

It is an arithmetic number, because the mean of its divisors is an integer number (19059439620).

Almost surely, 2^505231206255 is an apocalyptic number.

505231206255 is a deficient number, since it is larger than the sum of its proper divisors (409621895505).

505231206255 is a wasteful number, since it uses less digits than its factorization.

505231206255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557520 (or 557517 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 505231206255 in words is "five hundred five billion, two hundred thirty-one million, two hundred six thousand, two hundred fifty-five".