65242505 has 8 divisors (see below), whose sum is σ = 78365832. Its totient is φ = 52144128.

The previous prime is 65242483. The next prime is 65242531. The reversal of 65242505 is 50524256.

65242505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32569849 + 32672656 = 5707^2 + 5716^2 .

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 65242505 - 2⁸ = 65242249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (9795729).

Almost surely, 2^65242505 is an apocalyptic number.

It is an amenable number.

65242505 is a deficient number, since it is larger than the sum of its proper divisors (13123327).

65242505 is a wasteful number, since it uses less digits than its factorization.

65242505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12475.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 65242505 is about 8077.2832685254. The cubic root of 65242505 is about 402.5719789486.

The spelling of 65242505 in words is "sixty-five million, two hundred forty-two thousand, five hundred five".