8425405 has 8 divisors (see below), whose sum is σ = 10175832. Its totient is φ = 6696768.

The previous prime is 8425331. The next prime is 8425423. The reversal of 8425405 is 5045248.

8425405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9604 + 8415801 = 98^2 + 2901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8425405 - 2¹¹ = 8423357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4582 + ... + 6151.

It is an arithmetic number, because the mean of its divisors is an integer number (1271979).

Almost surely, 2^8425405 is an apocalyptic number.

It is an amenable number.

8425405 is a deficient number, since it is larger than the sum of its proper divisors (1750427).

8425405 is a wasteful number, since it uses less digits than its factorization.

8425405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10895.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 8425405 is about 2902.6548192990. The cubic root of 8425405 is about 203.4839980415.

The spelling of 8425405 in words is "eight million, four hundred twenty-five thousand, four hundred five".