225144340 has 12 divisors (see below), whose sum is σ = 472803156. Its totient is φ = 90057728.

The previous prime is 225144323. The next prime is 225144347. The reversal of 225144340 is 43441522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121837444 + 103306896 = 11038^2 + 10164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225144347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5628589 + ... + 5628628.

It is an arithmetic number, because the mean of its divisors is an integer number (39400263).

Almost surely, 2^225144340 is an apocalyptic number.

225144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225144340 is an abundant number, since it is smaller than the sum of its proper divisors (247658816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225144340 is a wasteful number, since it uses less digits than its factorization.

225144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257226 (or 11257224 counting only the distinct ones).

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

The square root of 225144340 is about 15004.8105619498. The cubic root of 225144340 is about 608.3502317609.

Adding to 225144340 its reverse (43441522), we get a palindrome (268585862).

The spelling of 225144340 in words is "two hundred twenty-five million, one hundred forty-four thousand, three hundred forty".