225540431 has 8 divisors (see below), whose sum is σ = 238608000. Its totient is φ = 212592600.

The previous prime is 225540409. The next prime is 225540437. The reversal of 225540431 is 134045522.

It is a happy number.

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 225540431 - 2¹⁰ = 225539407 is a prime.

It is a super-2 number, since 2×225540431² = 101736972031331522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225540431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225540437) 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, 26045 + ... + 33606.

It is an arithmetic number, because the mean of its divisors is an integer number (29826000).

Almost surely, 2^225540431 is an apocalyptic number.

225540431 is a deficient number, since it is larger than the sum of its proper divisors (13067569).

225540431 is a wasteful number, since it uses less digits than its factorization.

225540431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59869.

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

The square root of 225540431 is about 15018.0035623914. The cubic root of 225540431 is about 608.7067747137.

Adding to 225540431 its reverse (134045522), we get a palindrome (359585953).

The spelling of 225540431 in words is "two hundred twenty-five million, five hundred forty thousand, four hundred thirty-one".