6425405 has 16 divisors (see below), whose sum is σ = 9331200. Its totient is φ = 4146432.

The previous prime is 6425389. The next prime is 6425411. The reversal of 6425405 is 5045246.

It is a cyclic number.

It is not a de Polignac number, because 6425405 - 2⁴ = 6425389 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 4805 + ... + 5994.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^6425405 is an apocalyptic number.

It is an amenable number.

6425405 is a deficient number, since it is larger than the sum of its proper divisors (2905795).

6425405 is a wasteful number, since it uses less digits than its factorization.

6425405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10828.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 6425405 is about 2534.8382591400. The cubic root of 6425405 is about 185.9088947592.

The spelling of 6425405 in words is "six million, four hundred twenty-five thousand, four hundred five".