225232522420 has 24 divisors (see below), whose sum is σ = 481005050400. Its totient is φ = 88566008352.

The previous prime is 225232522363. The next prime is 225232522423. The reversal of 225232522420 is 24225232522.

It is a happy number.

225232522420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225232522423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95436330 + ... + 95438689.

It is an arithmetic number, because the mean of its divisors is an integer number (20041877100).

Almost surely, 2^225232522420 is an apocalyptic number.

225232522420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225232522420 is an abundant number, since it is smaller than the sum of its proper divisors (255772527980).

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

225232522420 is a wasteful number, since it uses less digits than its factorization.

225232522420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190875087 (or 190875085 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 225232522420 its reverse (24225232522), we get a palindrome (249457754942).

The spelling of 225232522420 in words is "two hundred twenty-five billion, two hundred thirty-two million, five hundred twenty-two thousand, four hundred twenty".