212425548818 has 24 divisors (see below), whose sum is σ = 370680060492. Its totient is φ = 91034816544.

The previous prime is 212425548781. The next prime is 212425548847. The reversal of 212425548818 is 818845524212.

It can be written as a sum of positive squares in 2 ways, for example, as 190067225089 + 22358323729 = 435967^2 + 149527^2 .

It is a super-2 number, since 2×212425548818² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2394380 + ... + 2481512.

Almost surely, 2^212425548818 is an apocalyptic number.

212425548818 is a deficient number, since it is larger than the sum of its proper divisors (158254511674).

212425548818 is a wasteful number, since it uses less digits than its factorization.

212425548818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112026 (or 112019 counting only the distinct ones).

The product of its digits is 1638400, while the sum is 50.

The spelling of 212425548818 in words is "two hundred twelve billion, four hundred twenty-five million, five hundred forty-eight thousand, eight hundred eighteen".