65525830 has 16 divisors (see below), whose sum is σ = 118039680. Its totient is φ = 26189632.

The previous prime is 65525821. The next prime is 65525833. The reversal of 65525830 is 3852556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65525833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20586 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (7377480).

Almost surely, 2^65525830 is an apocalyptic number.

65525830 is a deficient number, since it is larger than the sum of its proper divisors (52513850).

65525830 is a wasteful number, since it uses less digits than its factorization.

65525830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 65525830 is about 8094.8026535549. The cubic root of 65525830 is about 403.1538797490.

The spelling of 65525830 in words is "sixty-five million, five hundred twenty-five thousand, eight hundred thirty".