65750725 has 12 divisors (see below), whose sum is σ = 81752580. Its totient is φ = 52457600.

The previous prime is 65750717. The next prime is 65750761. The reversal of 65750725 is 52705756.

It can be written as a sum of positive squares in 6 ways, for example, as 964324 + 64786401 = 982^2 + 8049^2 .

It is not a de Polignac number, because 65750725 - 2³ = 65750717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6345 + ... + 13105.

It is an arithmetic number, because the mean of its divisors is an integer number (6812715).

Almost surely, 2^65750725 is an apocalyptic number.

It is an amenable number.

65750725 is a deficient number, since it is larger than the sum of its proper divisors (16001855).

65750725 is a wasteful number, since it uses less digits than its factorization.

65750725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7160 (or 7155 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 65750725 is about 8108.6820754053. The cubic root of 65750725 is about 403.6145823501.

The spelling of 65750725 in words is "sixty-five million, seven hundred fifty thousand, seven hundred twenty-five".