6525643 has 2 divisors, whose sum is σ = 6525644. Its totient is φ = 6525642.

The previous prime is 6525619. The next prime is 6525647. The reversal of 6525643 is 3465256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6525643 - 2⁵ = 6525611 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 5 + 2³ + 5 + 6⁸ + 4⁷ + 3¹⁴ .

It is not a weakly prime, because it can be changed into another prime (6525647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3262821 + 3262822.

It is an arithmetic number, because the mean of its divisors is an integer number (3262822).

Almost surely, 2^6525643 is an apocalyptic number.

6525643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6525643 is an equidigital number, since it uses as much as digits as its factorization.

6525643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 6525643 is about 2554.5338126555. The cubic root of 6525643 is about 186.8706532100.

The spelling of 6525643 in words is "six million, five hundred twenty-five thousand, six hundred forty-three".