12225997 has 16 divisors (see below), whose sum is σ = 14589952. Its totient is φ = 10024560.

The previous prime is 12225991. The next prime is 12226013. The reversal of 12225997 is 79952221.

It is not a de Polignac number, because 12225997 - 2³ = 12225989 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 (12225991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22078 + ... + 22624.

It is an arithmetic number, because the mean of its divisors is an integer number (911872).

Almost surely, 2^12225997 is an apocalyptic number.

It is an amenable number.

12225997 is a deficient number, since it is larger than the sum of its proper divisors (2363955).

12225997 is a wasteful number, since it uses less digits than its factorization.

12225997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its digits is 22680, while the sum is 37.

The square root of 12225997 is about 3496.5693186322. The cubic root of 12225997 is about 230.3711524795.

The spelling of 12225997 in words is "twelve million, two hundred twenty-five thousand, nine hundred ninety-seven".