65969725 has 12 divisors (see below), whose sum is σ = 82047700. Its totient is φ = 52617600.

The previous prime is 65969723. The next prime is 65969753. The reversal of 65969725 is 52796956.

It can be written as a sum of positive squares in 6 ways, for example, as 1633284 + 64336441 = 1278^2 + 8021^2 .

It is not a de Polignac number, because 65969725 - 2¹ = 65969723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65969723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4945 + ... + 12505.

Almost surely, 2^65969725 is an apocalyptic number.

It is an amenable number.

65969725 is a deficient number, since it is larger than the sum of its proper divisors (16077975).

65969725 is a wasteful number, since it uses less digits than its factorization.

65969725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7920 (or 7915 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 65969725 is about 8122.1748934630. The cubic root of 65969725 is about 404.0622004188.

The spelling of 65969725 in words is "sixty-five million, nine hundred sixty-nine thousand, seven hundred twenty-five".