65725632 has 84 divisors (see below), whose sum is σ = 215316816. Its totient is φ = 18777600.

The previous prime is 65725631. The next prime is 65725633. The reversal of 65725632 is 23652756.

It is a happy number.

65725632 is a `hidden beast` number, since 6 + 572 + 56 + 32 = 666.

65725632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65725631) and next prime (65725633).

It is a tau number, because it is divible by the number of its divisors (84).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4119 + ... + 12182.

Almost surely, 2^65725632 is an apocalyptic number.

It is an amenable number.

65725632 is an abundant number, since it is smaller than the sum of its proper divisors (149591184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65725632 is a wasteful number, since it uses less digits than its factorization.

65725632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16326 (or 16313 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 65725632 is about 8107.1346356157. The cubic root of 65725632 is about 403.5632308789.

The spelling of 65725632 in words is "sixty-five million, seven hundred twenty-five thousand, six hundred thirty-two".