505265255131 has 24 divisors (see below), whose sum is σ = 634733094240. Its totient is φ = 398656564992.

The previous prime is 505265255101. The next prime is 505265255137. The reversal of 505265255131 is 131552562505.

It is not a de Polignac number, because 505265255131 - 2¹³ = 505265246939 is a prime.

It is a super-2 number, since 2×505265255131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505265255137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 876046 + ... + 1333411.

It is an arithmetic number, because the mean of its divisors is an integer number (26447212260).

Almost surely, 2^505265255131 is an apocalyptic number.

505265255131 is a deficient number, since it is larger than the sum of its proper divisors (129467839109).

505265255131 is a wasteful number, since it uses less digits than its factorization.

505265255131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209843 (or 2209836 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 505265255131 in words is "five hundred five billion, two hundred sixty-five million, two hundred fifty-five thousand, one hundred thirty-one".