12825381 has 4 divisors (see below), whose sum is σ = 17100512. Its totient is φ = 8550252.

The previous prime is 12825359. The next prime is 12825403. The reversal of 12825381 is 18352821.

12825381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18352821 = 3 ⋅6117607.

It is an interprime number because it is at equal distance from previous prime (12825359) and next prime (12825403).

It is not a de Polignac number, because 12825381 - 2⁶ = 12825317 is a prime.

It is a super-2 number, since 2×12825381² = 328980795590322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12825331) 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, 2137561 + ... + 2137566.

It is an arithmetic number, because the mean of its divisors is an integer number (4275128).

Almost surely, 2^12825381 is an apocalyptic number.

It is an amenable number.

12825381 is a deficient number, since it is larger than the sum of its proper divisors (4275131).

12825381 is an equidigital number, since it uses as much as digits as its factorization.

12825381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275130.

The product of its digits is 3840, while the sum is 30.

The square root of 12825381 is about 3581.2541099453. The cubic root of 12825381 is about 234.0759305052.

The spelling of 12825381 in words is "twelve million, eight hundred twenty-five thousand, three hundred eighty-one".