66835581925325 has 24 divisors (see below), whose sum is σ = 82928229753600. Its totient is φ = 53434854114560.

The previous prime is 66835581925253. The next prime is 66835581925367. The reversal of 66835581925325 is 52352918553866.

It is not a de Polignac number, because 66835581925325 - 2⁸ = 66835581925069 is a prime.

It is a super-2 number, since 2×66835581925325² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422585861 + ... + 422743989.

It is an arithmetic number, because the mean of its divisors is an integer number (3455342906400).

Almost surely, 2^{66835581925325} is an apocalyptic number.

It is an amenable number.

66835581925325 is a deficient number, since it is larger than the sum of its proper divisors (16092647828275).

66835581925325 is a wasteful number, since it uses less digits than its factorization.

66835581925325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168661 (or 168656 counting only the distinct ones).

The product of its digits is 466560000, while the sum is 68.

The spelling of 66835581925325 in words is "sixty-six trillion, eight hundred thirty-five billion, five hundred eighty-one million, nine hundred twenty-five thousand, three hundred twenty-five".