13125625 has 10 divisors (see below), whose sum is σ = 16402562. Its totient is φ = 10500000.

The previous prime is 13125611. The next prime is 13125653. The reversal of 13125625 is 52652131.

It can be written as a sum of positive squares in 5 ways, for example, as 7118224 + 6007401 = 2668^2 + 2451^2 .

It is not a de Polignac number, because 13125625 - 2⁹ = 13125113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 13125625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9876 + ... + 11125.

Almost surely, 2^13125625 is an apocalyptic number.

It is an amenable number.

13125625 is a deficient number, since it is larger than the sum of its proper divisors (3276937).

13125625 is an frugal number, since it uses more digits than its factorization.

13125625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21021 (or 21006 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 13125625 is about 3622.9304437154. The cubic root of 13125625 is about 235.8884431580. Note that the first 3 decimals are identical.

Adding to 13125625 its reverse (52652131), we get a palindrome (65777756).

The spelling of 13125625 in words is "thirteen million, one hundred twenty-five thousand, six hundred twenty-five".