12899265 has 16 divisors (see below), whose sum is σ = 20702400. Its totient is φ = 6858432.

The previous prime is 12899231. The next prime is 12899267. The reversal of 12899265 is 56299821.

It is a de Polignac number, because none of the positive numbers 2^k-12899265 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12899267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4551 + ... + 6819.

It is an arithmetic number, because the mean of its divisors is an integer number (1293900).

Almost surely, 2^12899265 is an apocalyptic number.

12899265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12899265 is a deficient number, since it is larger than the sum of its proper divisors (7803135).

12899265 is a wasteful number, since it uses less digits than its factorization.

12899265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656.

The product of its digits is 77760, while the sum is 42.

The square root of 12899265 is about 3591.5546772951. The cubic root of 12899265 is about 234.5245555700.

The spelling of 12899265 in words is "twelve million, eight hundred ninety-nine thousand, two hundred sixty-five".