12500004 has 48 divisors (see below), whose sum is σ = 32026176. Its totient is φ = 3763200.

The previous prime is 12500003. The next prime is 12500029. The reversal of 12500004 is 40000521.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12500003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36924 + ... + 37260.

It is an arithmetic number, because the mean of its divisors is an integer number (667212).

Almost surely, 2^12500004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12500004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16013088).

12500004 is an abundant number, since it is smaller than the sum of its proper divisors (19526172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12500004 is a wasteful number, since it uses less digits than its factorization.

12500004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 12500004 is about 3535.5344716181. The cubic root of 12500004 is about 232.0794664358.

Adding to 12500004 its reverse (40000521), we get a palindrome (52500525).

The spelling of 12500004 in words is "twelve million, five hundred thousand, four".