12208725 has 30 divisors (see below), whose sum is σ = 22618530. Its totient is φ = 6510240.

The previous prime is 12208667. The next prime is 12208733. The reversal of 12208725 is 52780221.

12208725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2954961 + 9253764 = 1719^2 + 3042^2 .

It is not a de Polignac number, because 12208725 - 2⁷ = 12208597 is a prime.

It is a super-2 number, since 2×12208725² = 298105932251250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 990 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (753951).

Almost surely, 2^12208725 is an apocalyptic number.

12208725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12208725 is a deficient number, since it is larger than the sum of its proper divisors (10409805).

12208725 is an equidigital number, since it uses as much as digits as its factorization.

12208725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051 (or 6037 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12208725 is about 3494.0985962047. The cubic root of 12208725 is about 230.2626174796.

Adding to 12208725 its reverse (52780221), we get a palindrome (64988946).

The spelling of 12208725 in words is "twelve million, two hundred eight thousand, seven hundred twenty-five".