66000525 has 12 divisors (see below), whose sum is σ = 109120992. Its totient is φ = 35200240.

The previous prime is 66000523. The next prime is 66000553. The reversal of 66000525 is 52500066.

It is not a de Polignac number, because 66000525 - 2¹ = 66000523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66000495 and 66000504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000523) 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, 439929 + ... + 440078.

It is an arithmetic number, because the mean of its divisors is an integer number (9093416).

Almost surely, 2^66000525 is an apocalyptic number.

It is an amenable number.

66000525 is a deficient number, since it is larger than the sum of its proper divisors (43120467).

66000525 is a wasteful number, since it uses less digits than its factorization.

66000525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880020 (or 880015 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 66000525 is about 8124.0707160881. The cubic root of 66000525 is about 404.1250736003.

The spelling of 66000525 in words is "sixty-six million, five hundred twenty-five", and thus it is an aban number.