12510000 has 150 divisors (see below), whose sum is σ = 44064020. Its totient is φ = 3312000.

The previous prime is 12509983. The next prime is 12510023. The reversal of 12510000 is 1521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 89931 + ... + 90069.

Almost surely, 2^12510000 is an apocalyptic number.

12510000 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 12510000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22032010).

12510000 is an abundant number, since it is smaller than the sum of its proper divisors (31554020).

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

12510000 is a wasteful number, since it uses less digits than its factorization.

12510000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 12510000 is about 3536.9478367655. The cubic root of 12510000 is about 232.1413130357.

Adding to 12510000 its reverse (1521), we get a palindrome (12511521).

The spelling of 12510000 in words is "twelve million, five hundred ten thousand".