6525645 has 32 divisors (see below), whose sum is σ = 12564480. Its totient is φ = 2825280.

The previous prime is 6525643. The next prime is 6525647. The reversal of 6525645 is 5465256.

It is a happy number.

6525645 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6525643) and next prime (6525647).

It is not a de Polignac number, because 6525645 - 2¹ = 6525643 is a prime.

It is a super-3 number, since 3×6525645³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6525643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360 + ... + 3630.

It is an arithmetic number, because the mean of its divisors is an integer number (392640).

Almost surely, 2^6525645 is an apocalyptic number.

It is an amenable number.

6525645 is a deficient number, since it is larger than the sum of its proper divisors (6038835).

6525645 is a wasteful number, since it uses less digits than its factorization.

6525645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its digits is 36000, while the sum is 33.

The square root of 6525645 is about 2554.5342041163. The cubic root of 6525645 is about 186.8706723009.

The spelling of 6525645 in words is "six million, five hundred twenty-five thousand, six hundred forty-five".