12500545 has 4 divisors (see below), whose sum is σ = 15000660. Its totient is φ = 10000432.

The previous prime is 12500539. The next prime is 12500549. The reversal of 12500545 is 54500521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 9431041 = 1752^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 12500545 - 2⁵ = 12500513 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12500549) 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, 1250050 + ... + 1250059.

It is an arithmetic number, because the mean of its divisors is an integer number (3750165).

Almost surely, 2^12500545 is an apocalyptic number.

It is an amenable number.

12500545 is a deficient number, since it is larger than the sum of its proper divisors (2500115).

12500545 is an equidigital number, since it uses as much as digits as its factorization.

12500545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500114.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12500545 is about 3535.6109797318. The cubic root of 12500545 is about 232.0828145195.

The spelling of 12500545 in words is "twelve million, five hundred thousand, five hundred forty-five".