505235664425 has 24 divisors (see below), whose sum is σ = 627529627200. Its totient is φ = 403519838400.

The previous prime is 505235664413. The next prime is 505235664431. The reversal of 505235664425 is 524466532505.

It is not a de Polignac number, because 505235664425 - 2¹² = 505235660329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505235664425.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 40669715 + ... + 40682135.

It is an arithmetic number, because the mean of its divisors is an integer number (26147067800).

Almost surely, 2^505235664425 is an apocalyptic number.

It is an amenable number.

505235664425 is a deficient number, since it is larger than the sum of its proper divisors (122293962775).

505235664425 is a wasteful number, since it uses less digits than its factorization.

505235664425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14993 (or 14988 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 47.

The spelling of 505235664425 in words is "five hundred five billion, two hundred thirty-five million, six hundred sixty-four thousand, four hundred twenty-five".