229121225 has 12 divisors (see below), whose sum is σ = 284356800. Its totient is φ = 183138000.

The previous prime is 229121201. The next prime is 229121261. The reversal of 229121225 is 522121922.

It is not a de Polignac number, because 229121225 - 2¹⁰ = 229120201 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 229121194 and 229121203.

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 11 ways as a sum of consecutive naturals, for example, 31700 + ... + 38250.

It is an arithmetic number, because the mean of its divisors is an integer number (23696400).

Almost surely, 2^229121225 is an apocalyptic number.

229121225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

229121225 is a deficient number, since it is larger than the sum of its proper divisors (55235575).

229121225 is a wasteful number, since it uses less digits than its factorization.

229121225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960 (or 7955 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 229121225 is about 15136.7508072241. The cubic root of 229121225 is about 611.9112543437.

The spelling of 229121225 in words is "two hundred twenty-nine million, one hundred twenty-one thousand, two hundred twenty-five".