505025420 has 24 divisors (see below), whose sum is σ = 1061690784. Its totient is φ = 201793536.

The previous prime is 505025419. The next prime is 505025441. The reversal of 505025420 is 24520505.

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, 6284 + ... + 32396.

It is an arithmetic number, because the mean of its divisors is an integer number (44237116).

Almost surely, 2^505025420 is an apocalyptic number.

It is an amenable number.

505025420 is an abundant number, since it is smaller than the sum of its proper divisors (556665364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505025420 is a wasteful number, since it uses less digits than its factorization.

505025420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27089 (or 27087 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 505025420 is about 22472.7706347037. The cubic root of 505025420 is about 796.3507856031.

Adding to 505025420 its reverse (24520505), we get a palindrome (529545925).

The spelling of 505025420 in words is "five hundred five million, twenty-five thousand, four hundred twenty".