225423421 has 8 divisors (see below), whose sum is σ = 231421824. Its totient is φ = 219475200.

The previous prime is 225423403. The next prime is 225423433. The reversal of 225423421 is 124324522.

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 225423421 - 2¹⁷ = 225292349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225423461) 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, 3355 + ... + 21496.

It is an arithmetic number, because the mean of its divisors is an integer number (28927728).

Almost surely, 2^225423421 is an apocalyptic number.

It is an amenable number.

225423421 is a deficient number, since it is larger than the sum of its proper divisors (5998403).

225423421 is a wasteful number, since it uses less digits than its factorization.

225423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25091.

The product of its digits is 3840, while the sum is 25.

The square root of 225423421 is about 15014.1073993761. The cubic root of 225423421 is about 608.6014911510.

Adding to 225423421 its reverse (124324522), we get a palindrome (349747943).

The spelling of 225423421 in words is "two hundred twenty-five million, four hundred twenty-three thousand, four hundred twenty-one".