212450605225 has 48 divisors (see below), whose sum is σ = 284450419008. Its totient is φ = 156830883840.

The previous prime is 212450605223. The next prime is 212450605247. The reversal of 212450605225 is 522506054212.

It is not a de Polignac number, because 212450605225 - 2¹ = 212450605223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212450605223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4386994 + ... + 4435156.

It is an arithmetic number, because the mean of its divisors is an integer number (5926050396).

Almost surely, 2^212450605225 is an apocalyptic number.

212450605225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212450605225 is a deficient number, since it is larger than the sum of its proper divisors (71999813783).

212450605225 is a wasteful number, since it uses less digits than its factorization.

212450605225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48394 (or 48389 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 212450605225 its reverse (522506054212), we get a palindrome (734956659437).

The spelling of 212450605225 in words is "two hundred twelve billion, four hundred fifty million, six hundred five thousand, two hundred twenty-five".