66525125 has 16 divisors (see below), whose sum is σ = 83845632. Its totient is φ = 52693200.

The previous prime is 66525113. The next prime is 66525133. The reversal of 66525125 is 52152566.

It is not a de Polignac number, because 66525125 - 2¹² = 66521029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66525091 and 66525100.

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 15 ways as a sum of consecutive naturals, for example, 10292 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (5240352).

Almost surely, 2^66525125 is an apocalyptic number.

It is an amenable number.

66525125 is a deficient number, since it is larger than the sum of its proper divisors (17320507).

66525125 is a wasteful number, since it uses less digits than its factorization.

66525125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285 (or 5275 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 66525125 is about 8156.2935822590. The cubic root of 66525125 is about 405.1929680440.

The spelling of 66525125 in words is "sixty-six million, five hundred twenty-five thousand, one hundred twenty-five".