12507545 has 8 divisors (see below), whose sum is σ = 15040896. Its totient is φ = 9984816.

The previous prime is 12507541. The next prime is 12507559. The reversal of 12507545 is 54570521.

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 12507545 - 2² = 12507541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507541) 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, 224 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (1880112).

Almost surely, 2^12507545 is an apocalyptic number.

It is an amenable number.

12507545 is a deficient number, since it is larger than the sum of its proper divisors (2533351).

12507545 is an equidigital number, since it uses as much as digits as its factorization.

12507545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 12507545 is about 3536.6007691002. The cubic root of 12507545 is about 232.1261266725.

The spelling of 12507545 in words is "twelve million, five hundred seven thousand, five hundred forty-five".