225561207 has 16 divisors (see below), whose sum is σ = 314415360. Its totient is φ = 143565312.

The previous prime is 225561197. The next prime is 225561209. The reversal of 225561207 is 702165522.

It is not a de Polignac number, because 225561207 - 2⁷ = 225561079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225561209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37719 + ... + 43287.

It is an arithmetic number, because the mean of its divisors is an integer number (19650960).

Almost surely, 2^225561207 is an apocalyptic number.

225561207 is a deficient number, since it is larger than the sum of its proper divisors (88854153).

225561207 is a wasteful number, since it uses less digits than its factorization.

225561207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 225561207 is about 15018.6952495881. The cubic root of 225561207 is about 608.7254647901.

The spelling of 225561207 in words is "two hundred twenty-five million, five hundred sixty-one thousand, two hundred seven".