13400425 has 6 divisors (see below), whose sum is σ = 16616558. Its totient is φ = 10720320.

The previous prime is 13400417. The next prime is 13400441. The reversal of 13400425 is 52400431.

It can be written as a sum of positive squares in 3 ways, for example, as 1710864 + 11689561 = 1308^2 + 3419^2 .

It is not a de Polignac number, because 13400425 - 2³ = 13400417 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 267984 + ... + 268033.

Almost surely, 2^13400425 is an apocalyptic number.

It is an amenable number.

13400425 is a deficient number, since it is larger than the sum of its proper divisors (3216133).

13400425 is an equidigital number, since it uses as much as digits as its factorization.

13400425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536027 (or 536022 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13400425 is about 3660.6590936606. The cubic root of 13400425 is about 237.5232848823.

Adding to 13400425 its reverse (52400431), we get a palindrome (65800856).

The spelling of 13400425 in words is "thirteen million, four hundred thousand, four hundred twenty-five".