65062500221 has 4 divisors (see below), whose sum is σ = 65191849632. Its totient is φ = 64933150812.

The previous prime is 65062500197. The next prime is 65062500301. The reversal of 65062500221 is 12200526056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65062500221 - 2³⁰ = 63988758397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65062500721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64673951 + ... + 64674956.

It is an arithmetic number, because the mean of its divisors is an integer number (16297962408).

Almost surely, 2^65062500221 is an apocalyptic number.

It is an amenable number.

65062500221 is a deficient number, since it is larger than the sum of its proper divisors (129349411).

65062500221 is a wasteful number, since it uses less digits than its factorization.

65062500221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129349410.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 65062500221 in words is "sixty-five billion, sixty-two million, five hundred thousand, two hundred twenty-one".