12506289 has 8 divisors (see below), whose sum is σ = 16957920. Its totient is φ = 8196096.

The previous prime is 12506269. The next prime is 12506303. The reversal of 12506289 is 98260521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12506289 - 2⁵ = 12506257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12506239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35152 + ... + 35505.

It is an arithmetic number, because the mean of its divisors is an integer number (2119740).

Almost surely, 2^12506289 is an apocalyptic number.

It is an amenable number.

12506289 is a deficient number, since it is larger than the sum of its proper divisors (4451631).

12506289 is an equidigital number, since it uses as much as digits as its factorization.

12506289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70719.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12506289 is about 3536.4231930017. The cubic root of 12506289 is about 232.1183564247.

The spelling of 12506289 in words is "twelve million, five hundred six thousand, two hundred eighty-nine".