65025712617 has 4 divisors (see below), whose sum is σ = 86700950160. Its totient is φ = 43350475076.

The previous prime is 65025712573. The next prime is 65025712649. The reversal of 65025712617 is 71621752056.

It is a happy number.

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 65025712617 - 2⁷ = 65025712489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65025712417) 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, 10837618767 + ... + 10837618772.

It is an arithmetic number, because the mean of its divisors is an integer number (21675237540).

Almost surely, 2^65025712617 is an apocalyptic number.

It is an amenable number.

65025712617 is a deficient number, since it is larger than the sum of its proper divisors (21675237543).

65025712617 is a wasteful number, since it uses less digits than its factorization.

65025712617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675237542.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 65025712617 in words is "sixty-five billion, twenty-five million, seven hundred twelve thousand, six hundred seventeen".