65725136 has 20 divisors (see below), whose sum is σ = 131734500. Its totient is φ = 31729152.

The previous prime is 65725097. The next prime is 65725151. The reversal of 65725136 is 63152756.

It can be written as a sum of positive squares in 2 ways, for example, as 52475536 + 13249600 = 7244^2 + 3640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65725096 and 65725105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70361 + ... + 71288.

It is an arithmetic number, because the mean of its divisors is an integer number (6586725).

Almost surely, 2^65725136 is an apocalyptic number.

It is an amenable number.

65725136 is an abundant number, since it is smaller than the sum of its proper divisors (66009364).

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

65725136 is a wasteful number, since it uses less digits than its factorization.

65725136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141686 (or 141680 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 65725136 is about 8107.1040452186. The cubic root of 65725136 is about 403.5622157099.

The spelling of 65725136 in words is "sixty-five million, seven hundred twenty-five thousand, one hundred thirty-six".