65740725 has 18 divisors (see below), whose sum is σ = 117749346. Its totient is φ = 35061600.

The previous prime is 65740699. The next prime is 65740729. The reversal of 65740725 is 52704756.

It can be written as a sum of positive squares in 3 ways, for example, as 33489 + 65707236 = 183^2 + 8106^2 .

It is not a de Polignac number, because 65740725 - 2⁸ = 65740469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65740725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65740729) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 145866 + ... + 146315.

Almost surely, 2^65740725 is an apocalyptic number.

It is an amenable number.

65740725 is a deficient number, since it is larger than the sum of its proper divisors (52008621).

65740725 is a wasteful number, since it uses less digits than its factorization.

65740725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292197 (or 292189 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 65740725 is about 8108.0654289417. The cubic root of 65740725 is about 403.5941194556.

The spelling of 65740725 in words is "sixty-five million, seven hundred forty thousand, seven hundred twenty-five".