12515235 has 16 divisors (see below), whose sum is σ = 20113920. Its totient is φ = 6644960.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515235 is 53251521.

It is a happy number.

It is not a de Polignac number, because 12515235 - 2⁵ = 12515203 is a prime.

It is a super-2 number, since 2×12515235² = 313262214210450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840 + ... + 5330.

It is an arithmetic number, because the mean of its divisors is an integer number (1257120).

Almost surely, 2^12515235 is an apocalyptic number.

12515235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12515235 is a deficient number, since it is larger than the sum of its proper divisors (7598685).

12515235 is a wasteful number, since it uses less digits than its factorization.

12515235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

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

The square root of 12515235 is about 3537.6878042021. The cubic root of 12515235 is about 232.1736895424.

Adding to 12515235 its reverse (53251521), we get a palindrome (65766756).

The spelling of 12515235 in words is "twelve million, five hundred fifteen thousand, two hundred thirty-five".