225720066446 has 32 divisors (see below), whose sum is σ = 399622809600. Its totient is φ = 93571639200.

The previous prime is 225720066431. The next prime is 225720066503. The reversal of 225720066446 is 644660027522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 225720066397 and 225720066406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787076 + ... + 1034856.

It is an arithmetic number, because the mean of its divisors is an integer number (12488212800).

Almost surely, 2^225720066446 is an apocalyptic number.

225720066446 is a deficient number, since it is larger than the sum of its proper divisors (173902743154).

225720066446 is a wasteful number, since it uses less digits than its factorization.

225720066446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249920.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 225720066446 in words is "two hundred twenty-five billion, seven hundred twenty million, sixty-six thousand, four hundred forty-six".