12889425 has 24 divisors (see below), whose sum is σ = 21561120. Its totient is φ = 6793600.

The previous prime is 12889423. The next prime is 12889433. The reversal of 12889425 is 52498821.

It is not a de Polignac number, because 12889425 - 2¹ = 12889423 is a prime.

It is a super-2 number, since 2×12889425² = 332274553661250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12889423) 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 23 ways as a sum of consecutive naturals, for example, 5710 + ... + 7640.

It is an arithmetic number, because the mean of its divisors is an integer number (898380).

Almost surely, 2^12889425 is an apocalyptic number.

12889425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12889425 is a deficient number, since it is larger than the sum of its proper divisors (8671695).

12889425 is a wasteful number, since it uses less digits than its factorization.

12889425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2028 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 12889425 is about 3590.1845356472. The cubic root of 12889425 is about 234.4649059522.

The spelling of 12889425 in words is "twelve million, eight hundred eighty-nine thousand, four hundred twenty-five".