225421123400 has 96 divisors (see below), whose sum is σ = 579803158080. Its totient is φ = 80816736000.

The previous prime is 225421123387. The next prime is 225421123441. The reversal of 225421123400 is 4321124522.

225421123400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 225421123400.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 565379 + ... + 877778.

It is an arithmetic number, because the mean of its divisors is an integer number (6039616230).

Almost surely, 2^225421123400 is an apocalyptic number.

225421123400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225421123400 is an abundant number, since it is smaller than the sum of its proper divisors (354382034680).

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

225421123400 is a wasteful number, since it uses less digits than its factorization.

225421123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443255 (or 1443246 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 225421123400 its reverse (4321124522), we get a palindrome (229742247922).

The spelling of 225421123400 in words is "two hundred twenty-five billion, four hundred twenty-one million, one hundred twenty-three thousand, four hundred".