12505020 has 48 divisors (see below), whose sum is σ = 38199168. Its totient is φ = 3031360.

The previous prime is 12504977. The next prime is 12505037. The reversal of 12505020 is 2050521.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8814 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (795816).

Almost surely, 2^12505020 is an apocalyptic number.

12505020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12505020 is an abundant number, since it is smaller than the sum of its proper divisors (25694148).

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

12505020 is a wasteful number, since it uses less digits than its factorization.

12505020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18970 (or 18968 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 12505020 is about 3536.2437698779. The cubic root of 12505020 is about 232.1105052239.

Adding to 12505020 its reverse (2050521), we get a palindrome (14555541).

The spelling of 12505020 in words is "twelve million, five hundred five thousand, twenty".