120225816 has 32 divisors (see below), whose sum is σ = 333961200. Its totient is φ = 40075200.

The previous prime is 120225803. The next prime is 120225827. The reversal of 120225816 is 618522021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 120225816.

It is a congruent number.

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, 278085 + ... + 278516.

Almost surely, 2^120225816 is an apocalyptic number.

It is an amenable number.

120225816 is an abundant number, since it is smaller than the sum of its proper divisors (213735384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120225816 is a wasteful number, since it uses less digits than its factorization.

120225816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556616 (or 556606 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 120225816 is about 10964.7533487991. The cubic root of 120225816 is about 493.5516155213.

Adding to 120225816 its reverse (618522021), we get a palindrome (738747837).

The spelling of 120225816 in words is "one hundred twenty million, two hundred twenty-five thousand, eight hundred sixteen".