505255575258 has 64 divisors (see below), whose sum is σ = 1284676485120. Its totient is φ = 144191367216.

The previous prime is 505255575241. The next prime is 505255575299. The reversal of 505255575258 is 852575552505.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448210 + ... + 1100637.

It is an arithmetic number, because the mean of its divisors is an integer number (20073070080).

Almost surely, 2^505255575258 is an apocalyptic number.

505255575258 is an abundant number, since it is smaller than the sum of its proper divisors (779420909862).

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

505255575258 is a wasteful number, since it uses less digits than its factorization.

505255575258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549728 (or 1549722 counting only the distinct ones).

The product of its (nonzero) digits is 17500000, while the sum is 54.

The spelling of 505255575258 in words is "five hundred five billion, two hundred fifty-five million, five hundred seventy-five thousand, two hundred fifty-eight".