225508505042 has 18 divisors (see below), whose sum is σ = 339505353999. Its totient is φ = 112341567840.

The previous prime is 225508505039. The next prime is 225508505051. The reversal of 225508505042 is 240505805522.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 167214748561 + 58293756481 = 408919^2 + 241441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335789.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225508504987 and 225508505005.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 274674992 + ... + 274675812.

Almost surely, 2^225508505042 is an apocalyptic number.

225508505042 is a deficient number, since it is larger than the sum of its proper divisors (113996848957).

225508505042 is an frugal number, since it uses more digits than its factorization.

225508505042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 225508505042 in words is "two hundred twenty-five billion, five hundred eight million, five hundred five thousand, forty-two".