12215425514 has 16 divisors (see below), whose sum is σ = 19428683976. Its totient is φ = 5740224000.

The previous prime is 12215425499. The next prime is 12215425517. The reversal of 12215425514 is 41552451221.

It can be written as a sum of positive squares in 4 ways, for example, as 11147769889 + 1067655625 = 105583^2 + 32675^2 .

It is not an unprimeable number, because it can be changed into a prime (12215425517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232427 + ... + 280094.

Almost surely, 2^12215425514 is an apocalyptic number.

12215425514 is a deficient number, since it is larger than the sum of its proper divisors (7213258462).

12215425514 is a wasteful number, since it uses less digits than its factorization.

12215425514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513241.

The product of its digits is 16000, while the sum is 32.

Adding to 12215425514 its reverse (41552451221), we get a palindrome (53767876735).

The spelling of 12215425514 in words is "twelve billion, two hundred fifteen million, four hundred twenty-five thousand, five hundred fourteen".