212500004 has 6 divisors (see below), whose sum is σ = 371875014. Its totient is φ = 106250000.

The previous prime is 212499997. The next prime is 212500039. The reversal of 212500004 is 400005212.

212500004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 154008100 + 58491904 = 12410^2 + 7648^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26562497 + ... + 26562504.

It is an arithmetic number, because the mean of its divisors is an integer number (61979169).

Almost surely, 2^212500004 is an apocalyptic number.

It is an amenable number.

212500004 is a deficient number, since it is larger than the sum of its proper divisors (159375010).

212500004 is a wasteful number, since it uses less digits than its factorization.

212500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53125005 (or 53125003 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 212500004 is about 14577.3798743121. The cubic root of 212500004 is about 596.7415997079.

Adding to 212500004 its reverse (400005212), we get a palindrome (612505216).

The spelling of 212500004 in words is "two hundred twelve million, five hundred thousand, four".