225105420434142 has 32 divisors (see below), whose sum is σ = 456019865971200. Its totient is φ = 74067428268288.

The previous prime is 225105420434137. The next prime is 225105420434161. The reversal of 225105420434142 is 241434024501522.

It is a self number, because there is not a number n which added to its sum of digits gives 225105420434142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55407763 + ... + 59331534.

It is an arithmetic number, because the mean of its divisors is an integer number (14250620811600).

Almost surely, 2^{225105420434142} is an apocalyptic number.

225105420434142 is an abundant number, since it is smaller than the sum of its proper divisors (230914445537058).

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

225105420434142 is a wasteful number, since it uses less digits than its factorization.

225105420434142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114743520.

The product of its (nonzero) digits is 307200, while the sum is 39.

Adding to 225105420434142 its reverse (241434024501522), we get a palindrome (466539444935664).

The spelling of 225105420434142 in words is "two hundred twenty-five trillion, one hundred five billion, four hundred twenty million, four hundred thirty-four thousand, one hundred forty-two".