12985251 has 8 divisors (see below), whose sum is σ = 17607360. Its totient is φ = 8509992.

The previous prime is 12985223. The next prime is 12985277. The reversal of 12985251 is 15258921.

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

It is not a de Polignac number, because 12985251 - 2⁷ = 12985123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12985051) 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 7 ways as a sum of consecutive naturals, for example, 36505 + ... + 36858.

It is an arithmetic number, because the mean of its divisors is an integer number (2200920).

Almost surely, 2^12985251 is an apocalyptic number.

12985251 is a deficient number, since it is larger than the sum of its proper divisors (4622109).

12985251 is an equidigital number, since it uses as much as digits as its factorization.

12985251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73425.

The product of its digits is 7200, while the sum is 33.

The square root of 12985251 is about 3603.5053767131. The cubic root of 12985251 is about 235.0445124675.

The spelling of 12985251 in words is "twelve million, nine hundred eighty-five thousand, two hundred fifty-one".