225103421 has 4 divisors (see below), whose sum is σ = 227168700. Its totient is φ = 223038144.

The previous prime is 225103379. The next prime is 225103433. The reversal of 225103421 is 124301522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64802500 + 160300921 = 8050^2 + 12661^2 .

It is a cyclic number.

It is not a de Polignac number, because 225103421 - 2⁶ = 225103357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225103393 and 225103402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225103471) 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, 1032476 + ... + 1032693.

It is an arithmetic number, because the mean of its divisors is an integer number (56792175).

Almost surely, 2^225103421 is an apocalyptic number.

It is an amenable number.

225103421 is a deficient number, since it is larger than the sum of its proper divisors (2065279).

225103421 is a wasteful number, since it uses less digits than its factorization.

225103421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065278.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 225103421 is about 15003.4469706131. The cubic root of 225103421 is about 608.3133745292.

Adding to 225103421 its reverse (124301522), we get a palindrome (349404943).

The spelling of 225103421 in words is "two hundred twenty-five million, one hundred three thousand, four hundred twenty-one".