225171425446 has 32 divisors (see below), whose sum is σ = 372407888160. Its totient is φ = 101257516800.

The previous prime is 225171425441. The next prime is 225171425489. The reversal of 225171425446 is 644524171522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225171425441) 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, 1514050 + ... + 1656106.

It is an arithmetic number, because the mean of its divisors is an integer number (11637746505).

Almost surely, 2^225171425446 is an apocalyptic number.

225171425446 is a deficient number, since it is larger than the sum of its proper divisors (147236462714).

225171425446 is a wasteful number, since it uses less digits than its factorization.

225171425446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142840.

The product of its digits is 537600, while the sum is 43.

Adding to 225171425446 its reverse (644524171522), we get a palindrome (869695596968).

The spelling of 225171425446 in words is "two hundred twenty-five billion, one hundred seventy-one million, four hundred twenty-five thousand, four hundred forty-six".