12425978 has 16 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 5804400.

The previous prime is 12425977. The next prime is 12425999. The reversal of 12425978 is 87952421.

It is not an unprimeable number, because it can be changed into a prime (12425977) 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, 1658 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^12425978 is an apocalyptic number.

12425978 is a deficient number, since it is larger than the sum of its proper divisors (7480582).

12425978 is a wasteful number, since it uses less digits than its factorization.

12425978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973.

The product of its digits is 40320, while the sum is 38.

The square root of 12425978 is about 3525.0500705664. The cubic root of 12425978 is about 231.6204281773.

The spelling of 12425978 in words is "twelve million, four hundred twenty-five thousand, nine hundred seventy-eight".