12505645 has 8 divisors (see below), whose sum is σ = 15057504. Its totient is φ = 9970704.

The previous prime is 12505643. The next prime is 12505681. The reversal of 12505645 is 54650521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12505645 - 2¹ = 12505643 is a prime.

It is a super-3 number, since 3×12505645³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505643) 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, 2539 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (1882188).

Almost surely, 2^12505645 is an apocalyptic number.

It is an amenable number.

12505645 is a deficient number, since it is larger than the sum of its proper divisors (2551859).

12505645 is an equidigital number, since it uses as much as digits as its factorization.

12505645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 12505645 is about 3536.3321393783. The cubic root of 12505645 is about 232.1143721149.

The spelling of 12505645 in words is "twelve million, five hundred five thousand, six hundred forty-five".