505605125 has 8 divisors (see below), whose sum is σ = 630995352. Its totient is φ = 404484000.

The previous prime is 505605119. The next prime is 505605131. The reversal of 505605125 is 521506505.

It is an interprime number because it is at equal distance from previous prime (505605119) and next prime (505605131).

It can be written as a sum of positive squares in 4 ways, for example, as 209764 + 505395361 = 458^2 + 22481^2 .

It is not a de Polignac number, because 505605125 - 2²⁴ = 488827909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022296 + ... + 2022545.

It is an arithmetic number, because the mean of its divisors is an integer number (78874419).

Almost surely, 2^505605125 is an apocalyptic number.

It is an amenable number.

505605125 is a deficient number, since it is larger than the sum of its proper divisors (125390227).

505605125 is an equidigital number, since it uses as much as digits as its factorization.

505605125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044856 (or 4044846 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 505605125 is about 22485.6648778727. The cubic root of 505605125 is about 796.6553722559.

The spelling of 505605125 in words is "five hundred five million, six hundred five thousand, one hundred twenty-five".