225201778 has 16 divisors (see below), whose sum is σ = 341215776. Its totient is φ = 111468960.

The previous prime is 225201731. The next prime is 225201817. The reversal of 225201778 is 877102522.

It is a super-2 number, since 2×225201778² = 101431681628722568, which contains 22 as substring.

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, 91038 + ... + 93478.

It is an arithmetic number, because the mean of its divisors is an integer number (21325986).

Almost surely, 2^225201778 is an apocalyptic number.

225201778 is a deficient number, since it is larger than the sum of its proper divisors (116013998).

225201778 is a wasteful number, since it uses less digits than its factorization.

225201778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 225201778 is about 15006.7244260698. The cubic root of 225201778 is about 608.4019607238.

The spelling of 225201778 in words is "two hundred twenty-five million, two hundred one thousand, seven hundred seventy-eight".