12478025 has 24 divisors (see below), whose sum is σ = 17867904. Its totient is φ = 8467200.

The previous prime is 12478009. The next prime is 12478031. The reversal of 12478025 is 52087421.

It is not a de Polignac number, because 12478025 - 2⁴ = 12478009 is a prime.

It is a super-2 number, since 2×12478025² = 311402215801250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19460 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (744496).

Almost surely, 2^12478025 is an apocalyptic number.

It is an amenable number.

12478025 is a deficient number, since it is larger than the sum of its proper divisors (5389879).

12478025 is a wasteful number, since it uses less digits than its factorization.

12478025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12478025 is about 3532.4248045783. The cubic root of 12478025 is about 231.9433633547.

The spelling of 12478025 in words is "twelve million, four hundred seventy-eight thousand, twenty-five".