225212241 has 16 divisors (see below), whose sum is σ = 310489088. Its totient is φ = 145054800.

The previous prime is 225212237. The next prime is 225212287. The reversal of 225212241 is 142212522.

It is not a de Polignac number, because 225212241 - 2² = 225212237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225212201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65946 + ... + 69276.

It is an arithmetic number, because the mean of its divisors is an integer number (19405568).

Almost surely, 2^225212241 is an apocalyptic number.

It is an amenable number.

225212241 is a deficient number, since it is larger than the sum of its proper divisors (85276847).

225212241 is a wasteful number, since it uses less digits than its factorization.

225212241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092.

The product of its digits is 640, while the sum is 21.

The square root of 225212241 is about 15007.0730324071. The cubic root of 225212241 is about 608.4113828091.

Adding to 225212241 its reverse (142212522), we get a palindrome (367424763).

The spelling of 225212241 in words is "two hundred twenty-five million, two hundred twelve thousand, two hundred forty-one".