12315525 has 24 divisors (see below), whose sum is σ = 21022464. Its totient is φ = 6355200.

The previous prime is 12315521. The next prime is 12315529. The reversal of 12315525 is 52551321.

It is a happy number.

12315525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12315521) and next prime (12315529).

It is not a de Polignac number, because 12315525 - 2² = 12315521 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12315495 and 12315504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (875936).

Almost surely, 2^12315525 is an apocalyptic number.

12315525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12315525 is a deficient number, since it is larger than the sum of its proper divisors (8706939).

12315525 is a wasteful number, since it uses less digits than its factorization.

12315525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5341 (or 5336 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 12315525 is about 3509.3482300849. The cubic root of 12315525 is about 230.9321027564.

Adding to 12315525 its reverse (52551321), we get a palindrome (64866846).

The spelling of 12315525 in words is "twelve million, three hundred fifteen thousand, five hundred twenty-five".