12625997 has 4 divisors (see below), whose sum is σ = 12636636. Its totient is φ = 12615360.

The previous prime is 12625993. The next prime is 12625999. The reversal of 12625997 is 79952621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79952621 = 7 ⋅11421803.

It can be written as a sum of positive squares in 2 ways, for example, as 6220036 + 6405961 = 2494^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 12625997 - 2² = 12625993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12625993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3278 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (3159159).

Almost surely, 2^12625997 is an apocalyptic number.

It is an amenable number.

12625997 is a deficient number, since it is larger than the sum of its proper divisors (10639).

12625997 is an equidigital number, since it uses as much as digits as its factorization.

12625997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638.

The product of its digits is 68040, while the sum is 41.

The square root of 12625997 is about 3553.3078954687. The cubic root of 12625997 is about 232.8566046526.

The spelling of 12625997 in words is "twelve million, six hundred twenty-five thousand, nine hundred ninety-seven".