225243340 has 48 divisors (see below), whose sum is σ = 553783104. Its totient is φ = 75340800.

The previous prime is 225243329. The next prime is 225243349. The reversal of 225243340 is 43342522.

It is not an unprimeable number, because it can be changed into a prime (225243349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13881 + ... + 25360.

It is an arithmetic number, because the mean of its divisors is an integer number (11537148).

Almost surely, 2^225243340 is an apocalyptic number.

225243340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225243340 is an abundant number, since it is smaller than the sum of its proper divisors (328539764).

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

225243340 is a wasteful number, since it uses less digits than its factorization.

225243340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39298 (or 39296 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 225243340 is about 15008.1091413942. The cubic root of 225243340 is about 608.4393861933.

Adding to 225243340 its reverse (43342522), we get a palindrome (268585862).

The spelling of 225243340 in words is "two hundred twenty-five million, two hundred forty-three thousand, three hundred forty".