504220525 has 6 divisors (see below), whose sum is σ = 625233482. Its totient is φ = 403376400.

The previous prime is 504220523. The next prime is 504220529. The reversal of 504220525 is 525022405.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 82246761 + 421973764 = 9069^2 + 20542^2 .

It is not a de Polignac number, because 504220525 - 2¹ = 504220523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 20168821 = 504220525 / (5 + 0 + 4 + 2 + 2 + 0 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 504220525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504220523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10084386 + ... + 10084435.

Almost surely, 2^504220525 is an apocalyptic number.

It is an amenable number.

504220525 is a deficient number, since it is larger than the sum of its proper divisors (121012957).

504220525 is a wasteful number, since it uses less digits than its factorization.

504220525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20168831 (or 20168826 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 504220525 is about 22454.8552656213. The cubic root of 504220525 is about 795.9274936482.

The spelling of 504220525 in words is "five hundred four million, two hundred twenty thousand, five hundred twenty-five".