12516254 has 4 divisors (see below), whose sum is σ = 18774384. Its totient is φ = 6258126.

The previous prime is 12516253. The next prime is 12516263. The reversal of 12516254 is 45261521.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12516254² = 313313228385032, which contains 22 as substring.

It is a congruent 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 as a sum of consecutive naturals, namely, 3129062 + ... + 3129065.

It is an arithmetic number, because the mean of its divisors is an integer number (4693596).

Almost surely, 2^12516254 is an apocalyptic number.

12516254 is a deficient number, since it is larger than the sum of its proper divisors (6258130).

12516254 is an equidigital number, since it uses as much as digits as its factorization.

12516254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6258129.

The product of its digits is 2400, while the sum is 26.

The square root of 12516254 is about 3537.8318218932. The cubic root of 12516254 is about 232.1799906245.

Adding to 12516254 its reverse (45261521), we get a palindrome (57777775).

The spelling of 12516254 in words is "twelve million, five hundred sixteen thousand, two hundred fifty-four".