505425 has 24 divisors (see below), whose sum is σ = 874944. Its totient is φ = 256960.

The previous prime is 505411. The next prime is 505429. The reversal of 505425 is 524505.

505425 = 75² + 76² + ... + 124².

It is not a de Polignac number, because 505425 - 2⁴ = 505409 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505425.

It is not an unprimeable number, because it can be changed into a prime (505429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1579 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2⁵⁰⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

505425 is a deficient number, since it is larger than the sum of its proper divisors (369519).

505425 is a wasteful number, since it uses less digits than its factorization.

505425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 505425 is about 710.9324862461. The cubic root of 505425 is about 79.6560756527.

The spelling of 505425 in words is "five hundred five thousand, four hundred twenty-five".