13404625 has 32 divisors (see below), whose sum is σ = 18424224. Its totient is φ = 9676800.

The previous prime is 13404613. The next prime is 13404647. The reversal of 13404625 is 52640431.

It can be written as a sum of positive squares in 16 ways, for example, as 13307904 + 96721 = 3648^2 + 311^2 .

It is not a de Polignac number, because 13404625 - 2¹⁹ = 12880337 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13404625.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 118569 + ... + 118681.

It is an arithmetic number, because the mean of its divisors is an integer number (575757).

Almost surely, 2^13404625 is an apocalyptic number.

It is an amenable number.

13404625 is a deficient number, since it is larger than the sum of its proper divisors (5019599).

13404625 is a wasteful number, since it uses less digits than its factorization.

13404625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 13404625 is about 3661.2327159032. The cubic root of 13404625 is about 237.5480973688.

The spelling of 13404625 in words is "thirteen million, four hundred four thousand, six hundred twenty-five".