13404925 has 12 divisors (see below), whose sum is σ = 17600436. Its totient is φ = 10092800.

The previous prime is 13404907. The next prime is 13404943. The reversal of 13404925 is 52940431.

It is an interprime number because it is at equal distance from previous prime (13404907) and next prime (13404943).

It can be written as a sum of positive squares in 6 ways, for example, as 1585081 + 11819844 = 1259^2 + 3438^2 .

It is not a de Polignac number, because 13404925 - 2¹¹ = 13402877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13404893 and 13404902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15346 + ... + 16195.

It is an arithmetic number, because the mean of its divisors is an integer number (1466703).

Almost surely, 2^13404925 is an apocalyptic number.

It is an amenable number.

13404925 is a deficient number, since it is larger than the sum of its proper divisors (4195511).

13404925 is a wasteful number, since it uses less digits than its factorization.

13404925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31568 (or 31563 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13404925 is about 3661.2736854816. The cubic root of 13404925 is about 237.5498694909.

The spelling of 13404925 in words is "thirteen million, four hundred four thousand, nine hundred twenty-five".