505327807825 has 12 divisors (see below), whose sum is σ = 626930704348. Its totient is φ = 404053070400.

The previous prime is 505327807823. The next prime is 505327807861. The reversal of 505327807825 is 528708723505.

It can be written as a sum of positive squares in 6 ways, for example, as 6688459089 + 498639348736 = 81783^2 + 706144^2 .

It is not a de Polignac number, because 505327807825 - 2¹ = 505327807823 is a prime.

It is a super-2 number, since 2×505327807825² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505327807823) 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, 5180106 + ... + 5276755.

Almost surely, 2^505327807825 is an apocalyptic number.

It is an amenable number.

505327807825 is a deficient number, since it is larger than the sum of its proper divisors (121602896523).

505327807825 is a wasteful number, since it uses less digits than its factorization.

505327807825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458804 (or 10458799 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 505327807825 in words is "five hundred five billion, three hundred twenty-seven million, eight hundred seven thousand, eight hundred twenty-five".