12505000 has 80 divisors (see below), whose sum is σ = 30505860. Its totient is φ = 4800000.

The previous prime is 12504977. The next prime is 12505037. The reversal of 12505000 is 50521.

It can be written as a sum of positive squares in 10 ways, for example, as 7279204 + 5225796 = 2698^2 + 2286^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 204970 + ... + 205030.

It is a vampire number, since it can be written as 2501 ⋅ 5000 (with its own digits).

Almost surely, 2^12505000 is an apocalyptic number.

12505000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12505000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15252930).

12505000 is an abundant number, since it is smaller than the sum of its proper divisors (18000860).

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

12505000 is an equidigital number, since it uses as much as digits as its factorization.

12505000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 12505000 is about 3536.2409420174. The cubic root of 12505000 is about 232.1103814813.

Adding to 12505000 its reverse (50521), we get a palindrome (12555521).

It can be divided in two parts, 1250 and 5000, that multiplied together give a 4-th power (6250000 = 50⁴).

The spelling of 12505000 in words is "twelve million, five hundred five thousand".