65309725 has 24 divisors (see below), whose sum is σ = 88105472. Its totient is φ = 47736000.

The previous prime is 65309723. The next prime is 65309737. The reversal of 65309725 is 52790356.

65309725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65309725 - 2¹ = 65309723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65309723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32500 + ... + 34450.

Almost surely, 2^65309725 is an apocalyptic number.

65309725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65309725 is a deficient number, since it is larger than the sum of its proper divisors (22795747).

65309725 is a wasteful number, since it uses less digits than its factorization.

65309725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077 (or 2072 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 65309725 is about 8081.4432498162. The cubic root of 65309725 is about 402.7101894605.

The spelling of 65309725 in words is "sixty-five million, three hundred nine thousand, seven hundred twenty-five".