66532525 has 24 divisors (see below), whose sum is σ = 86021280. Its totient is φ = 50984640.

The previous prime is 66532519. The next prime is 66532597. The reversal of 66532525 is 52523566.

It is not a de Polignac number, because 66532525 - 2¹³ = 66524333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117894 + ... + 118456.

It is an arithmetic number, because the mean of its divisors is an integer number (3584220).

Almost surely, 2^66532525 is an apocalyptic number.

It is an amenable number.

66532525 is a deficient number, since it is larger than the sum of its proper divisors (19488755).

66532525 is a wasteful number, since it uses less digits than its factorization.

66532525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 760 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 66532525 is about 8156.7472070673. The cubic root of 66532525 is about 405.2079915247.

The spelling of 66532525 in words is "sixty-six million, five hundred thirty-two thousand, five hundred twenty-five".