6539425 has 6 divisors (see below), whose sum is σ = 8108918. Its totient is φ = 5231520.

The previous prime is 6539387. The next prime is 6539437. The reversal of 6539425 is 5249356.

6539425 is digitally balanced in base 3, 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 3 ways, for example, as 349281 + 6190144 = 591^2 + 2488^2 .

It is not a de Polignac number, because 6539425 - 2¹³ = 6531233 is a prime.

It is a Duffinian number.

6539425 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130764 + ... + 130813.

Almost surely, 2^6539425 is an apocalyptic number.

It is an amenable number.

6539425 is a deficient number, since it is larger than the sum of its proper divisors (1569493).

6539425 is a wasteful number, since it uses less digits than its factorization.

6539425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261587 (or 261582 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 6539425 is about 2557.2299466415. The cubic root of 6539425 is about 187.0021161361.

The spelling of 6539425 in words is "six million, five hundred thirty-nine thousand, four hundred twenty-five".