222501225 has 24 divisors (see below), whose sum is σ = 368448640. Its totient is φ = 118480320.

The previous prime is 222501211. The next prime is 222501247. The reversal of 222501225 is 522105222.

It is not a de Polignac number, because 222501225 - 2⁹ = 222500713 is a prime.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 54816 + ... + 58734.

Almost surely, 2^222501225 is an apocalyptic number.

222501225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222501225 is a deficient number, since it is larger than the sum of its proper divisors (145947415).

222501225 is a wasteful number, since it uses less digits than its factorization.

222501225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689 (or 4684 counting only the distinct ones).

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

The square root of 222501225 is about 14916.4749522131. The cubic root of 222501225 is about 605.9602491108.

Adding to 222501225 its reverse (522105222), we get a palindrome (744606447).

The spelling of 222501225 in words is "two hundred twenty-two million, five hundred one thousand, two hundred twenty-five".