65542225 has 24 divisors (see below), whose sum is σ = 98350848. Its totient is φ = 42297600.

The previous prime is 65542193. The next prime is 65542237. The reversal of 65542225 is 52224556.

It is a happy number.

It is not a de Polignac number, because 65542225 - 2⁵ = 65542193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8041 + ... + 13990.

It is an arithmetic number, because the mean of its divisors is an integer number (4097952).

Almost surely, 2^65542225 is an apocalyptic number.

It is an amenable number.

65542225 is a deficient number, since it is larger than the sum of its proper divisors (32808623).

65542225 is a wasteful number, since it uses less digits than its factorization.

65542225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22065 (or 22060 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 65542225 is about 8095.8152770428. The cubic root of 65542225 is about 403.1875008756.

The spelling of 65542225 in words is "sixty-five million, five hundred forty-two thousand, two hundred twenty-five".