12525278 has 8 divisors (see below), whose sum is σ = 19142568. Its totient is φ = 6144424.

The previous prime is 12525269. The next prime is 12525301. The reversal of 12525278 is 87252521.

It is a happy number.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58976 + ... + 59187.

It is an arithmetic number, because the mean of its divisors is an integer number (2392821).

Almost surely, 2^12525278 is an apocalyptic number.

12525278 is a deficient number, since it is larger than the sum of its proper divisors (6617290).

12525278 is a wasteful number, since it uses less digits than its factorization.

12525278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118218.

The product of its digits is 11200, while the sum is 32.

The square root of 12525278 is about 3539.1069495001. The cubic root of 12525278 is about 232.2357764559.

Adding to 12525278 its reverse (87252521), we get a palindrome (99777799).

The spelling of 12525278 in words is "twelve million, five hundred twenty-five thousand, two hundred seventy-eight".