65217116066025 has 192 divisors, whose sum is σ = 134667809280000. Its totient is φ = 27055713484800.

The previous prime is 65217116066021. The next prime is 65217116066057. The reversal of 65217116066025 is 52066061171256.

It is not a de Polignac number, because 65217116066025 - 2² = 65217116066021 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65217116066021) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8821464729 + ... + 8821472121.

It is an arithmetic number, because the mean of its divisors is an integer number (701394840000).

Almost surely, 2^{65217116066025} is an apocalyptic number.

It is an amenable number.

65217116066025 is an abundant number, since it is smaller than the sum of its proper divisors (69450693213975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65217116066025 is a wasteful number, since it uses less digits than its factorization.

65217116066025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9896 (or 9891 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 65217116066025 in words is "sixty-five trillion, two hundred seventeen billion, one hundred sixteen million, sixty-six thousand, twenty-five".