220224925 has 12 divisors (see below), whose sum is σ = 280460596. Its totient is φ = 171417600.

The previous prime is 220224883. The next prime is 220224937. The reversal of 220224925 is 529422022.

220224925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1125721 + 219099204 = 1061^2 + 14802^2 .

It is not a de Polignac number, because 220224925 - 2⁹ = 220224413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220224893 and 220224902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118116 + ... + 119965.

Almost surely, 2^220224925 is an apocalyptic number.

220224925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220224925 is a deficient number, since it is larger than the sum of its proper divisors (60235671).

220224925 is a wasteful number, since it uses less digits than its factorization.

220224925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238128 (or 238123 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 220224925 is about 14839.9772573950. The cubic root of 220224925 is about 603.8867353730.

Adding to 220224925 its reverse (529422022), we get a palindrome (749646947).

The spelling of 220224925 in words is "two hundred twenty million, two hundred twenty-four thousand, nine hundred twenty-five".