66155325 has 12 divisors (see below), whose sum is σ = 109376928. Its totient is φ = 35282800.

The previous prime is 66155281. The next prime is 66155387. The reversal of 66155325 is 52355166.

It is not a de Polignac number, because 66155325 - 2⁸ = 66155069 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 11 ways as a sum of consecutive naturals, for example, 440961 + ... + 441110.

It is an arithmetic number, because the mean of its divisors is an integer number (9114744).

Almost surely, 2^66155325 is an apocalyptic number.

It is an amenable number.

66155325 is a deficient number, since it is larger than the sum of its proper divisors (43221603).

66155325 is a wasteful number, since it uses less digits than its factorization.

66155325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882084 (or 882079 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 66155325 is about 8133.5923797545. The cubic root of 66155325 is about 404.4407767253.

The spelling of 66155325 in words is "sixty-six million, one hundred fifty-five thousand, three hundred twenty-five".