14215220225 has 24 divisors (see below), whose sum is σ = 18670691160. Its totient is φ = 10699243520.

The previous prime is 14215220213. The next prime is 14215220233. The reversal of 14215220225 is 52202251241.

It can be written as a sum of positive squares in 12 ways, for example, as 1010222656 + 13204997569 = 31784^2 + 114913^2 .

It is not a de Polignac number, because 14215220225 - 2¹⁶ = 14215154689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14215220194 and 14215220203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1665569 + ... + 1674081.

It is an arithmetic number, because the mean of its divisors is an integer number (777945465).

Almost surely, 2^14215220225 is an apocalyptic number.

It is an amenable number.

14215220225 is a deficient number, since it is larger than the sum of its proper divisors (4455470935).

14215220225 is a wasteful number, since it uses less digits than its factorization.

14215220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12469 (or 12464 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 14215220225 its reverse (52202251241), we get a palindrome (66417471466).

The spelling of 14215220225 in words is "fourteen billion, two hundred fifteen million, two hundred twenty thousand, two hundred twenty-five".