505252256545 has 16 divisors (see below), whose sum is σ = 654479688960. Its totient is φ = 373295817664.

The previous prime is 505252256543. The next prime is 505252256569. The reversal of 505252256545 is 545652252505.

It is a cyclic number.

It is not a de Polignac number, because 505252256545 - 2¹ = 505252256543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505252256495 and 505252256504.

It is not an unprimeable number, because it can be changed into a prime (505252256543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75746629 + ... + 75753298.

It is an arithmetic number, because the mean of its divisors is an integer number (40904980560).

Almost surely, 2^505252256545 is an apocalyptic number.

It is an amenable number.

505252256545 is a deficient number, since it is larger than the sum of its proper divisors (149227432415).

505252256545 is a wasteful number, since it uses less digits than its factorization.

505252256545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151499984.

The product of its (nonzero) digits is 3000000, while the sum is 46.

The spelling of 505252256545 in words is "five hundred five billion, two hundred fifty-two million, two hundred fifty-six thousand, five hundred forty-five".