65625011 has 4 divisors (see below), whose sum is σ = 65692224. Its totient is φ = 65557800.

The previous prime is 65624953. The next prime is 65625017. The reversal of 65625011 is 11052656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65625011 - 2¹⁸ = 65362867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65625017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32120 + ... + 34101.

It is an arithmetic number, because the mean of its divisors is an integer number (16423056).

Almost surely, 2^65625011 is an apocalyptic number.

65625011 is a deficient number, since it is larger than the sum of its proper divisors (67213).

65625011 is an equidigital number, since it uses as much as digits as its factorization.

65625011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67212.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 65625011 is about 8100.9265519445. The cubic root of 65625011 is about 403.3571840429.

Adding to 65625011 its reverse (11052656), we get a palindrome (76677667).

The spelling of 65625011 in words is "sixty-five million, six hundred twenty-five thousand, eleven".