12615225 has 24 divisors (see below), whose sum is σ = 23837760. Its totient is φ = 5766720.

The previous prime is 12615199. The next prime is 12615257. The reversal of 12615225 is 52251621.

It is a happy number.

12615225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12615225 - 2⁹ = 12614713 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12615195 and 12615204.

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, 11490 + ... + 12539.

It is an arithmetic number, because the mean of its divisors is an integer number (993240).

Almost surely, 2^12615225 is an apocalyptic number.

12615225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12615225 is a deficient number, since it is larger than the sum of its proper divisors (11222535).

12615225 is a wasteful number, since it uses less digits than its factorization.

12615225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24049 (or 24044 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 12615225 is about 3551.7918013307. The cubic root of 12615225 is about 232.7903644705.

Adding to 12615225 its reverse (52251621), we get a palindrome (64866846).

It can be divided in two parts, 126 and 15225, that added together give a palindrome (15351).

The spelling of 12615225 in words is "twelve million, six hundred fifteen thousand, two hundred twenty-five".