65725630 has 32 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 25777440.

The previous prime is 65725589. The next prime is 65725631. The reversal of 65725630 is 3652756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65725631) 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 15 ways as a sum of consecutive naturals, for example, 213937 + ... + 214243.

It is an arithmetic number, because the mean of its divisors is an integer number (3769920).

Almost surely, 2^65725630 is an apocalyptic number.

65725630 is a deficient number, since it is larger than the sum of its proper divisors (54911810).

65725630 is a wasteful number, since it uses less digits than its factorization.

65725630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 65725630 is about 8107.1345122676. The cubic root of 65725630 is about 403.5632267855.

The spelling of 65725630 in words is "sixty-five million, seven hundred twenty-five thousand, six hundred thirty".