225400243781240 has 64 divisors (see below), whose sum is σ = 556649347340160. Its totient is φ = 81460880046720.

The previous prime is 225400243781231. The next prime is 225400243781281. The reversal of 225400243781240 is 42187342004522.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 225400243781191 and 225400243781200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1571318714 + ... + 1571462153.

It is an arithmetic number, because the mean of its divisors is an integer number (8697646052190).

Almost surely, 2^{225400243781240} is an apocalyptic number.

225400243781240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225400243781240 is an abundant number, since it is smaller than the sum of its proper divisors (331249103558920).

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

225400243781240 is a wasteful number, since it uses less digits than its factorization.

225400243781240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142781052 (or 3142781048 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

Adding to 225400243781240 its reverse (42187342004522), we get a palindrome (267587585785762).

The spelling of 225400243781240 in words is "two hundred twenty-five trillion, four hundred billion, two hundred forty-three million, seven hundred eighty-one thousand, two hundred forty".