12500845 has 32 divisors (see below), whose sum is σ = 18289152. Its totient is φ = 8017152.

The previous prime is 12500821. The next prime is 12500849. The reversal of 12500845 is 54800521.

It is a cyclic number.

It is not a de Polignac number, because 12500845 - 2²³ = 4112237 is a prime.

It is a super-2 number, since 2×12500845² = 312542251428050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42519 + ... + 42811.

It is an arithmetic number, because the mean of its divisors is an integer number (571536).

Almost surely, 2^12500845 is an apocalyptic number.

It is an amenable number.

12500845 is a deficient number, since it is larger than the sum of its proper divisors (5788307).

12500845 is a wasteful number, since it uses less digits than its factorization.

12500845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 12500845 is about 3535.6534049593. The cubic root of 12500845 is about 232.0846710862.

It can be divided in two parts, 12500 and 845, that multiplied together give a square (10562500 = 3250²).

The spelling of 12500845 in words is "twelve million, five hundred thousand, eight hundred forty-five".