65747725 has 6 divisors (see below), whose sum is σ = 81527210. Its totient is φ = 52598160.

The previous prime is 65747701. The next prime is 65747729. The reversal of 65747725 is 52774756.

It can be written as a sum of positive squares in 3 ways, for example, as 509796 + 65237929 = 714^2 + 8077^2 .

It is not a de Polignac number, because 65747725 - 2¹¹ = 65745677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65747729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1314930 + ... + 1314979.

Almost surely, 2^65747725 is an apocalyptic number.

It is an amenable number.

65747725 is a deficient number, since it is larger than the sum of its proper divisors (15779485).

65747725 is a wasteful number, since it uses less digits than its factorization.

65747725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629919 (or 2629914 counting only the distinct ones).

The product of its digits is 411600, while the sum is 43.

The square root of 65747725 is about 8108.4970863903. The cubic root of 65747725 is about 403.6084436996.

The spelling of 65747725 in words is "sixty-five million, seven hundred forty-seven thousand, seven hundred twenty-five".