225421321355 has 16 divisors (see below), whose sum is σ = 271797724800. Its totient is φ = 179476523520.

The previous prime is 225421321339. The next prime is 225421321357. The reversal of 225421321355 is 553123124522.

It is not a de Polignac number, because 225421321355 - 2⁴ = 225421321339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225421321357) 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 15 ways as a sum of consecutive naturals, for example, 2001791 + ... + 2111399.

It is an arithmetic number, because the mean of its divisors is an integer number (16987357800).

Almost surely, 2^225421321355 is an apocalyptic number.

225421321355 is a deficient number, since it is larger than the sum of its proper divisors (46376403445).

225421321355 is a wasteful number, since it uses less digits than its factorization.

225421321355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111574.

The product of its digits is 72000, while the sum is 35.

Adding to 225421321355 its reverse (553123124522), we get a palindrome (778544445877).

The spelling of 225421321355 in words is "two hundred twenty-five billion, four hundred twenty-one million, three hundred twenty-one thousand, three hundred fifty-five".