505255255529 has 4 divisors (see below), whose sum is σ = 505258037376. Its totient is φ = 505252473684.

The previous prime is 505255255471. The next prime is 505255255567. The reversal of 505255255529 is 925552552505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505255255529 - 2²⁰ = 505254206953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505255255429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097909 + ... + 1488594.

It is an arithmetic number, because the mean of its divisors is an integer number (126314509344).

Almost surely, 2^505255255529 is an apocalyptic number.

It is an amenable number.

505255255529 is a deficient number, since it is larger than the sum of its proper divisors (2781847).

505255255529 is a wasteful number, since it uses less digits than its factorization.

505255255529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781846.

The product of its (nonzero) digits is 5625000, while the sum is 50.

The spelling of 505255255529 in words is "five hundred five billion, two hundred fifty-five million, two hundred fifty-five thousand, five hundred twenty-nine".