12725280 has 72 divisors (see below), whose sum is σ = 43429932. Its totient is φ = 3393024.

The previous prime is 12725263. The next prime is 12725281. The reversal of 12725280 is 8252721.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 1192464 = 3396^2 + 1092^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (12725281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2979 + ... + 5858.

Almost surely, 2^12725280 is an apocalyptic number.

12725280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12725280 is an abundant number, since it is smaller than the sum of its proper divisors (30704652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12725280 is a wasteful number, since it uses less digits than its factorization.

12725280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12725280 is about 3567.2510424695. The cubic root of 12725280 is about 233.4653583898.

The spelling of 12725280 in words is "twelve million, seven hundred twenty-five thousand, two hundred eighty".