225235421 has 8 divisors (see below), whose sum is σ = 230594304. Its totient is φ = 219900240.

The previous prime is 225235393. The next prime is 225235433. The reversal of 225235421 is 124532522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225235421 - 2¹⁰ = 225234397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225235921) 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 7 ways as a sum of consecutive naturals, for example, 14096 + ... + 25478.

It is an arithmetic number, because the mean of its divisors is an integer number (28824288).

Almost surely, 2^225235421 is an apocalyptic number.

It is an amenable number.

225235421 is a deficient number, since it is larger than the sum of its proper divisors (5358883).

225235421 is a wasteful number, since it uses less digits than its factorization.

225235421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11851.

The product of its digits is 4800, while the sum is 26.

The square root of 225235421 is about 15007.8453150344. The cubic root of 225235421 is about 608.4322557006.

Adding to 225235421 its reverse (124532522), we get a palindrome (349767943).

It can be divided in two parts, 2252 and 35421, that added together give a palindrome (37673).

The spelling of 225235421 in words is "two hundred twenty-five million, two hundred thirty-five thousand, four hundred twenty-one".