505225166663 has 12 divisors (see below), whose sum is σ = 587738792160. Its totient is φ = 433029596832.

The previous prime is 505225166653. The next prime is 505225166671. The reversal of 505225166663 is 366661522505.

It is not a de Polignac number, because 505225166663 - 2⁴ = 505225166647 is a prime.

It is a super-2 number, since 2×505225166663² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505225166623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 848018 + ... + 1315136.

It is an arithmetic number, because the mean of its divisors is an integer number (48978232680).

Almost surely, 2^505225166663 is an apocalyptic number.

505225166663 is a deficient number, since it is larger than the sum of its proper divisors (82513625497).

505225166663 is a wasteful number, since it uses less digits than its factorization.

505225166663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489206 (or 489199 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 505225166663 in words is "five hundred five billion, two hundred twenty-five million, one hundred sixty-six thousand, six hundred sixty-three".