225188642518 has 12 divisors (see below), whose sum is σ = 392931202932. Its totient is φ = 96509418180.

The previous prime is 225188642507. The next prime is 225188642537. The reversal of 225188642518 is 815246881522.

225188642518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 1148921548 + ... + 1148921743.

It is an arithmetic number, because the mean of its divisors is an integer number (32744266911).

Almost surely, 2^225188642518 is an apocalyptic number.

225188642518 is a deficient number, since it is larger than the sum of its proper divisors (167742560414).

225188642518 is a wasteful number, since it uses less digits than its factorization.

225188642518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297843307 (or 2297843300 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 52.

The spelling of 225188642518 in words is "two hundred twenty-five billion, one hundred eighty-eight million, six hundred forty-two thousand, five hundred eighteen".