12525505 has 4 divisors (see below), whose sum is σ = 15030612. Its totient is φ = 10020400.

The previous prime is 12525497. The next prime is 12525509. The reversal of 12525505 is 50552521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50552521 = 19 ⋅2660659.

It can be written as a sum of positive squares in 2 ways, for example, as 5645376 + 6880129 = 2376^2 + 2623^2 .

It is not a de Polignac number, because 12525505 - 2³ = 12525497 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 12525505.

It is not an unprimeable number, because it can be changed into a prime (12525509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252546 + ... + 1252555.

It is an arithmetic number, because the mean of its divisors is an integer number (3757653).

Almost surely, 2^12525505 is an apocalyptic number.

It is an amenable number.

12525505 is a deficient number, since it is larger than the sum of its proper divisors (2505107).

12525505 is an equidigital number, since it uses as much as digits as its factorization.

12525505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505106.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 12525505 is about 3539.1390195922. The cubic root of 12525505 is about 232.2371794108.

The spelling of 12525505 in words is "twelve million, five hundred twenty-five thousand, five hundred five".