12651225 has 48 divisors (see below), whose sum is σ = 22165248. Its totient is φ = 6359040.

The previous prime is 12651203. The next prime is 12651227. The reversal of 12651225 is 52215621.

It is a happy number.

It is not a de Polignac number, because 12651225 - 2⁶ = 12651161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12651195 and 12651204.

It is not an unprimeable number, because it can be changed into a prime (12651227) 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, 130377 + ... + 130473.

It is an arithmetic number, because the mean of its divisors is an integer number (461776).

Almost surely, 2^12651225 is an apocalyptic number.

12651225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12651225 is a deficient number, since it is larger than the sum of its proper divisors (9514023).

12651225 is a wasteful number, since it uses less digits than its factorization.

12651225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 189 counting only the distinct ones).

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

The square root of 12651225 is about 3556.8560555637. The cubic root of 12651225 is about 233.0115917041.

Adding to 12651225 its reverse (52215621), we get a palindrome (64866846).

The spelling of 12651225 in words is "twelve million, six hundred fifty-one thousand, two hundred twenty-five".