225033421 has 4 divisors (see below), whose sum is σ = 225070272. Its totient is φ = 224996572.

The previous prime is 225033407. The next prime is 225033439. The reversal of 225033421 is 124330522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225033421 - 2¹⁵ = 225000653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225033392 and 225033401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225033451) 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 3 ways as a sum of consecutive naturals, for example, 6835 + ... + 22288.

It is an arithmetic number, because the mean of its divisors is an integer number (56267568).

Almost surely, 2^225033421 is an apocalyptic number.

It is an amenable number.

225033421 is a deficient number, since it is larger than the sum of its proper divisors (36851).

225033421 is an equidigital number, since it uses as much as digits as its factorization.

225033421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36850.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 225033421 is about 15001.1139919674. The cubic root of 225033421 is about 608.2503126254.

Adding to 225033421 its reverse (124330522), we get a palindrome (349363943).

The spelling of 225033421 in words is "two hundred twenty-five million, thirty-three thousand, four hundred twenty-one".