6660525 has 12 divisors (see below), whose sum is σ = 11012192. Its totient is φ = 3552240.

The previous prime is 6660523. The next prime is 6660551. The reversal of 6660525 is 5250666.

It is not a de Polignac number, because 6660525 - 2¹ = 6660523 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6660492 and 6660501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44329 + ... + 44478.

Almost surely, 2^6660525 is an apocalyptic number.

It is an amenable number.

6660525 is a deficient number, since it is larger than the sum of its proper divisors (4351667).

6660525 is a wasteful number, since it uses less digits than its factorization.

6660525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88820 (or 88815 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 6660525 is about 2580.7992947922. The cubic root of 6660525 is about 188.1493927230.

The spelling of 6660525 in words is "six million, six hundred sixty thousand, five hundred twenty-five".