12516251 has 8 divisors (see below), whose sum is σ = 13787904. Its totient is φ = 11266920.

The previous prime is 12516247. The next prime is 12516253. The reversal of 12516251 is 15261521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12516251 - 2² = 12516247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12516253) 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, 4391 + ... + 6656.

It is an arithmetic number, because the mean of its divisors is an integer number (1723488).

Almost surely, 2^12516251 is an apocalyptic number.

12516251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12516251 is a deficient number, since it is larger than the sum of its proper divisors (1271653).

12516251 is a wasteful number, since it uses less digits than its factorization.

12516251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161.

The product of its digits is 600, while the sum is 23.

The square root of 12516251 is about 3537.8313979047. The cubic root of 12516251 is about 232.1799720742.

Adding to 12516251 its reverse (15261521), we get a palindrome (27777772).

The spelling of 12516251 in words is "twelve million, five hundred sixteen thousand, two hundred fifty-one".