225232535420 has 48 divisors (see below), whose sum is σ = 484088663520. Its totient is φ = 87979535616.

The previous prime is 225232535389. The next prime is 225232535431. The reversal of 225232535420 is 24535232522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4561826 + ... + 4610934.

It is an arithmetic number, because the mean of its divisors is an integer number (10085180490).

Almost surely, 2^225232535420 is an apocalyptic number.

225232535420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225232535420 is an abundant number, since it is smaller than the sum of its proper divisors (258856128100).

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

225232535420 is a wasteful number, since it uses less digits than its factorization.

225232535420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54494 (or 54492 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 225232535420 its reverse (24535232522), we get a palindrome (249767767942).

The spelling of 225232535420 in words is "two hundred twenty-five billion, two hundred thirty-two million, five hundred thirty-five thousand, four hundred twenty".