505255131085 has 16 divisors (see below), whose sum is σ = 632842730496. Its totient is φ = 386522802688.

The previous prime is 505255131077. The next prime is 505255131107. The reversal of 505255131085 is 580131552505.

It is a cyclic number.

It is not a de Polignac number, because 505255131085 - 2³ = 505255131077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191389 + ... + 1023298.

It is an arithmetic number, because the mean of its divisors is an integer number (39552670656).

Almost surely, 2^505255131085 is an apocalyptic number.

It is an amenable number.

505255131085 is a deficient number, since it is larger than the sum of its proper divisors (127587599411).

505255131085 is a wasteful number, since it uses less digits than its factorization.

505255131085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218332.

The product of its (nonzero) digits is 150000, while the sum is 40.

The spelling of 505255131085 in words is "five hundred five billion, two hundred fifty-five million, one hundred thirty-one thousand, eighty-five".