65984225 has 24 divisors (see below), whose sum is σ = 87503328. Its totient is φ = 49184000.

The previous prime is 65984183. The next prime is 65984227. The reversal of 65984225 is 52248956.

It is not a de Polignac number, because 65984225 - 2¹⁰ = 65983201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65984227) by changing a digit.

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, 44750 + ... + 46200.

It is an arithmetic number, because the mean of its divisors is an integer number (3645972).

Almost surely, 2^65984225 is an apocalyptic number.

It is an amenable number.

65984225 is a deficient number, since it is larger than the sum of its proper divisors (21519103).

65984225 is a wasteful number, since it uses less digits than its factorization.

65984225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1580 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 65984225 is about 8123.0674624799. The cubic root of 65984225 is about 404.0918022435.

The spelling of 65984225 in words is "sixty-five million, nine hundred eighty-four thousand, two hundred twenty-five".