225421221512 has 32 divisors (see below), whose sum is σ = 426337067520. Its totient is φ = 111733607040.

The previous prime is 225421221463. The next prime is 225421221533. The reversal of 225421221512 is 215122124522.

225421221512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×225421221512² (a number of 24 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 655337 + ... + 938247.

It is an arithmetic number, because the mean of its divisors is an integer number (13323033360).

Almost surely, 2^225421221512 is an apocalyptic number.

It is an amenable number.

225421221512 is a deficient number, since it is larger than the sum of its proper divisors (200915846008).

225421221512 is a wasteful number, since it uses less digits than its factorization.

225421221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283781 (or 283777 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The spelling of 225421221512 in words is "two hundred twenty-five billion, four hundred twenty-one million, two hundred twenty-one thousand, five hundred twelve".