225243142142 has 12 divisors (see below), whose sum is σ = 356582981016. Its totient is φ = 106694119620.

The previous prime is 225243142133. The next prime is 225243142177. The reversal of 225243142142 is 241241342522.

It is a junction number, because it is equal to n+sod(n) for n = 225243142099 and 225243142108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155984834 + ... + 155986277.

It is an arithmetic number, because the mean of its divisors is an integer number (29715248418).

Almost surely, 2^225243142142 is an apocalyptic number.

225243142142 is a deficient number, since it is larger than the sum of its proper divisors (131339838874).

225243142142 is a wasteful number, since it uses less digits than its factorization.

225243142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311971151 (or 311971132 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

Adding to 225243142142 its reverse (241241342522), we get a palindrome (466484484664).

The spelling of 225243142142 in words is "two hundred twenty-five billion, two hundred forty-three million, one hundred forty-two thousand, one hundred forty-two".