13405925 has 36 divisors (see below), whose sum is σ = 19061280. Its totient is φ = 9322560.

The previous prime is 13405913. The next prime is 13405927. The reversal of 13405925 is 52950431.

It is not a de Polignac number, because 13405925 - 2¹⁰ = 13404901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405927) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 80192 + ... + 80358.

It is an arithmetic number, because the mean of its divisors is an integer number (529480).

Almost surely, 2^13405925 is an apocalyptic number.

It is an amenable number.

13405925 is a deficient number, since it is larger than the sum of its proper divisors (5655355).

13405925 is a wasteful number, since it uses less digits than its factorization.

13405925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 13405925 is about 3661.4102474320. The cubic root of 13405925 is about 237.5557763737. Note that the first 3 decimals are identical.

The spelling of 13405925 in words is "thirteen million, four hundred five thousand, nine hundred twenty-five".