225613032520 has 32 divisors (see below), whose sum is σ = 507718323000. Its totient is φ = 90229390848.

The previous prime is 225613032503. The next prime is 225613032523. The reversal of 225613032520 is 25230316522.

It can be written as a sum of positive squares in 4 ways, for example, as 106708062244 + 118904970276 = 326662^2 + 344826^2 .

It is not an unprimeable number, because it can be changed into a prime (225613032523) 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 7 ways as a sum of consecutive naturals, for example, 262095 + ... + 721054.

Almost surely, 2^225613032520 is an apocalyptic number.

225613032520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225613032520 is an abundant number, since it is smaller than the sum of its proper divisors (282105290480).

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

225613032520 is a wasteful number, since it uses less digits than its factorization.

225613032520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988897 (or 988893 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 225613032520 in words is "two hundred twenty-five billion, six hundred thirteen million, thirty-two thousand, five hundred twenty".