12620525 has 6 divisors (see below), whose sum is σ = 15649482. Its totient is φ = 10096400.

The previous prime is 12620521. The next prime is 12620527. The reversal of 12620525 is 52502621.

It can be written as a sum of positive squares in 3 ways, for example, as 1737124 + 10883401 = 1318^2 + 3299^2 .

It is not a de Polignac number, because 12620525 - 2² = 12620521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12620525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252386 + ... + 252435.

It is an arithmetic number, because the mean of its divisors is an integer number (2608247).

Almost surely, 2^12620525 is an apocalyptic number.

It is an amenable number.

12620525 is a deficient number, since it is larger than the sum of its proper divisors (3028957).

12620525 is an equidigital number, since it uses as much as digits as its factorization.

12620525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504831 (or 504826 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12620525 is about 3552.5378252736. The cubic root of 12620525 is about 232.8229604327.

The spelling of 12620525 in words is "twelve million, six hundred twenty thousand, five hundred twenty-five".