6540525 has 36 divisors (see below), whose sum is σ = 12017460. Its totient is φ = 3398400.

The previous prime is 6540511. The next prime is 6540539. The reversal of 6540525 is 5250456.

6540525 is a `hidden beast` number, since 654 + 0 + 5 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (6540511) and next prime (6540539).

It can be written as a sum of positive squares in 6 ways, for example, as 2268036 + 4272489 = 1506^2 + 2067^2 .

It is not a de Polignac number, because 6540525 - 2⁵ = 6540493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8871 + ... + 9579.

Almost surely, 2^6540525 is an apocalyptic number.

It is an amenable number.

6540525 is a deficient number, since it is larger than the sum of its proper divisors (5476935).

6540525 is a wasteful number, since it uses less digits than its factorization.

6540525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 6540525 is about 2557.4450140717. The cubic root of 6540525 is about 187.0126007885.

The spelling of 6540525 in words is "six million, five hundred forty thousand, five hundred twenty-five".