12481257 has 8 divisors (see below), whose sum is σ = 16660000. Its totient is φ = 8311680.

The previous prime is 12481253. The next prime is 12481279. The reversal of 12481257 is 75218421.

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

It is not a de Polignac number, because 12481257 - 2² = 12481253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12481253) 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, 2082 + ... + 5412.

It is an arithmetic number, because the mean of its divisors is an integer number (2082500).

Almost surely, 2^12481257 is an apocalyptic number.

It is an amenable number.

12481257 is a deficient number, since it is larger than the sum of its proper divisors (4178743).

12481257 is a wasteful number, since it uses less digits than its factorization.

12481257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583.

The product of its digits is 4480, while the sum is 30.

The square root of 12481257 is about 3532.8822510806. The cubic root of 12481257 is about 231.9633872564.

Adding to 12481257 its reverse (75218421), we get a palindrome (87699678).

The spelling of 12481257 in words is "twelve million, four hundred eighty-one thousand, two hundred fifty-seven".