6542425 has 6 divisors (see below), whose sum is σ = 8112638. Its totient is φ = 5233920.

The previous prime is 6542423. The next prime is 6542443. The reversal of 6542425 is 5242456.

It can be written as a sum of positive squares in 3 ways, for example, as 2064969 + 4477456 = 1437^2 + 2116^2 .

It is not a de Polignac number, because 6542425 - 2¹ = 6542423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6542393 and 6542402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130824 + ... + 130873.

Almost surely, 2^6542425 is an apocalyptic number.

It is an amenable number.

6542425 is a deficient number, since it is larger than the sum of its proper divisors (1570213).

6542425 is a wasteful number, since it uses less digits than its factorization.

6542425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261707 (or 261702 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 6542425 is about 2557.8164515852. The cubic root of 6542425 is about 187.0307078742.

The spelling of 6542425 in words is "six million, five hundred forty-two thousand, four hundred twenty-five".