225243235340 has 24 divisors (see below), whose sum is σ = 473043890592. Its totient is φ = 90090990080.

The previous prime is 225243235307. The next prime is 225243235351. The reversal of 225243235340 is 43532342522.

It is a self number, because there is not a number n which added to its sum of digits gives 225243235340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95504 + ... + 677943.

It is an arithmetic number, because the mean of its divisors is an integer number (19710162108).

Almost surely, 2^225243235340 is an apocalyptic number.

225243235340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225243235340 is an abundant number, since it is smaller than the sum of its proper divisors (247800655252).

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

225243235340 is a wasteful number, since it uses less digits than its factorization.

225243235340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788017 (or 788015 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 225243235340 its reverse (43532342522), we get a palindrome (268775577862).

The spelling of 225243235340 in words is "two hundred twenty-five billion, two hundred forty-three million, two hundred thirty-five thousand, three hundred forty".