65512725 has 24 divisors (see below), whose sum is σ = 109695360. Its totient is φ = 34494720.

The previous prime is 65512723. The next prime is 65512729. The reversal of 65512725 is 52721556.

It is not a de Polignac number, because 65512725 - 2¹ = 65512723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65512723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (4570640).

Almost surely, 2^65512725 is an apocalyptic number.

It is an amenable number.

65512725 is a deficient number, since it is larger than the sum of its proper divisors (44182635).

65512725 is a wasteful number, since it uses less digits than its factorization.

65512725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149 (or 11144 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 65512725 is about 8093.9931430660. The cubic root of 65512725 is about 403.1270013722.

The spelling of 65512725 in words is "sixty-five million, five hundred twelve thousand, seven hundred twenty-five".