225517444 has 24 divisors (see below), whose sum is σ = 424116000. Its totient is φ = 104539776.

The previous prime is 225517423. The next prime is 225517451. The reversal of 225517444 is 444715522.

225517444 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20194 + ... + 29305.

It is an arithmetic number, because the mean of its divisors is an integer number (17671500).

Almost surely, 2^225517444 is an apocalyptic number.

It is an amenable number.

225517444 is a deficient number, since it is larger than the sum of its proper divisors (198598556).

225517444 is a wasteful number, since it uses less digits than its factorization.

225517444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49587 (or 49585 counting only the distinct ones).

The product of its digits is 44800, while the sum is 34.

The square root of 225517444 is about 15017.2382281164. The cubic root of 225517444 is about 608.6860942856.

The spelling of 225517444 in words is "two hundred twenty-five million, five hundred seventeen thousand, four hundred forty-four".