12500530 has 32 divisors (see below), whose sum is σ = 26319744. Its totient is φ = 4185216.

The previous prime is 12500519. The next prime is 12500539. The reversal of 12500530 is 3500521.

It is not an unprimeable number, because it can be changed into a prime (12500539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (822492).

Almost surely, 2^12500530 is an apocalyptic number.

12500530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12500530 is an abundant number, since it is smaller than the sum of its proper divisors (13819214).

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

12500530 is a wasteful number, since it uses less digits than its factorization.

12500530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 12500530 is about 3535.6088584571. The cubic root of 12500530 is about 232.0827216904.

Subtracting from 12500530 its reverse (3500521), we obtain a palindrome (9000009).

The spelling of 12500530 in words is "twelve million, five hundred thousand, five hundred thirty".