8135425 has 12 divisors (see below), whose sum is σ = 10335276. Its totient is φ = 6348800.

The previous prime is 8135417. The next prime is 8135429. The reversal of 8135425 is 5245318.

It can be written as a sum of positive squares in 6 ways, for example, as 47089 + 8088336 = 217^2 + 2844^2 .

It is not a de Polignac number, because 8135425 - 2³ = 8135417 is a prime.

It is a Duffinian number.

8135425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8135393 and 8135402.

It is not an unprimeable number, because it can be changed into a prime (8135429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2944 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (861273).

Almost surely, 2^8135425 is an apocalyptic number.

It is an amenable number.

8135425 is a deficient number, since it is larger than the sum of its proper divisors (2199851).

8135425 is a wasteful number, since it uses less digits than its factorization.

8135425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988 (or 7983 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 8135425 is about 2852.2666425143. The cubic root of 8135425 is about 201.1222328559.

The spelling of 8135425 in words is "eight million, one hundred thirty-five thousand, four hundred twenty-five".