220204525 has 12 divisors (see below), whose sum is σ = 275562100. Its totient is φ = 174545280.

The previous prime is 220204493. The next prime is 220204531. The reversal of 220204525 is 525402022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2022084 + 218182441 = 1422^2 + 14771^2 .

It is not a de Polignac number, because 220204525 - 2⁵ = 220204493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220204496 and 220204505.

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 11 ways as a sum of consecutive naturals, for example, 37680 + ... + 43129.

Almost surely, 2^220204525 is an apocalyptic number.

220204525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220204525 is a deficient number, since it is larger than the sum of its proper divisors (55357575).

220204525 is a wasteful number, since it uses less digits than its factorization.

220204525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80928 (or 80923 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 220204525 is about 14839.2899088871. The cubic root of 220204525 is about 603.8680882712.

Adding to 220204525 its reverse (525402022), we get a palindrome (745606547).

The spelling of 220204525 in words is "two hundred twenty million, two hundred four thousand, five hundred twenty-five".