225352520 has 16 divisors (see below), whose sum is σ = 507043260. Its totient is φ = 90140992.

The previous prime is 225352511. The next prime is 225352531. The reversal of 225352520 is 25253522.

It is a happy number.

225352520 is digitally balanced in base 3, 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 2 ways, for example, as 224340484 + 1012036 = 14978^2 + 1006^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225352520.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816867 + ... + 2816946.

Almost surely, 2^225352520 is an apocalyptic number.

225352520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225352520 is an abundant number, since it is smaller than the sum of its proper divisors (281690740).

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

225352520 is a wasteful number, since it uses less digits than its factorization.

225352520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633824 (or 5633820 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 225352520 is about 15011.7460676631. The cubic root of 225352520 is about 608.5376779369.

The spelling of 225352520 in words is "two hundred twenty-five million, three hundred fifty-two thousand, five hundred twenty".