66324525 has 24 divisors (see below), whose sum is σ = 114427200. Its totient is φ = 33834240.

The previous prime is 66324523. The next prime is 66324541. The reversal of 66324525 is 52542366.

It is not a de Polignac number, because 66324525 - 2¹ = 66324523 is a prime.

It is a super-3 number, since 3×66324525³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66324523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17500 + ... + 20949.

It is an arithmetic number, because the mean of its divisors is an integer number (4767800).

Almost surely, 2^66324525 is an apocalyptic number.

It is an amenable number.

66324525 is a deficient number, since it is larger than the sum of its proper divisors (48102675).

66324525 is a wasteful number, since it uses less digits than its factorization.

66324525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38485 (or 38480 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 66324525 is about 8143.9870456675. The cubic root of 66324525 is about 404.7852847537.

The spelling of 66324525 in words is "sixty-six million, three hundred twenty-four thousand, five hundred twenty-five".