8402425 has 12 divisors (see below), whose sum is σ = 10642176. Its totient is φ = 6578000.

The previous prime is 8402419. The next prime is 8402453. The reversal of 8402425 is 5242048.

It is a happy number.

It is not a de Polignac number, because 8402425 - 2¹¹ = 8400377 is a prime.

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

It is a Duffinian number.

8402425 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8402425.

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 11 ways as a sum of consecutive naturals, for example, 2401 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (886848).

Almost surely, 2^8402425 is an apocalyptic number.

It is an amenable number.

8402425 is a deficient number, since it is larger than the sum of its proper divisors (2239751).

8402425 is a wasteful number, since it uses less digits than its factorization.

8402425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208 (or 7203 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8402425 is about 2898.6936712940. The cubic root of 8402425 is about 203.2988310774.

The spelling of 8402425 in words is "eight million, four hundred two thousand, four hundred twenty-five".