501222225 has 72 divisors (see below), whose sum is σ = 997436160. Its totient is φ = 221182080.

The previous prime is 501222193. The next prime is 501222259. The reversal of 501222225 is 522222105.

It is not a de Polignac number, because 501222225 - 2⁵ = 501222193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 104224 + ... + 108926.

It is an arithmetic number, because the mean of its divisors is an integer number (13853280).

Almost surely, 2^501222225 is an apocalyptic number.

It is an amenable number.

501222225 is a deficient number, since it is larger than the sum of its proper divisors (496213935).

501222225 is a wasteful number, since it uses less digits than its factorization.

501222225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759 (or 4747 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 501222225 is about 22387.9928756465. The cubic root of 501222225 is about 794.3467201569.

The spelling of 501222225 in words is "five hundred one million, two hundred twenty-two thousand, two hundred twenty-five".