65072505 has 8 divisors (see below), whose sum is σ = 104116032. Its totient is φ = 34705328.

The previous prime is 65072489. The next prime is 65072507. The reversal of 65072505 is 50527056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65072505 - 2⁴ = 65072489 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (65072507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169069 + ... + 2169098.

It is an arithmetic number, because the mean of its divisors is an integer number (13014504).

Almost surely, 2^65072505 is an apocalyptic number.

It is an amenable number.

65072505 is a deficient number, since it is larger than the sum of its proper divisors (39043527).

65072505 is a wasteful number, since it uses less digits than its factorization.

65072505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338175.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 65072505 is about 8066.7530642756. The cubic root of 65072505 is about 402.2220191379. Note that the first 3 decimals are identical.

The spelling of 65072505 in words is "sixty-five million, seventy-two thousand, five hundred five".