65225680531 has 12 divisors (see below), whose sum is σ = 72909509400. Its totient is φ = 58291048640.

The previous prime is 65225680477. The next prime is 65225680549. The reversal of 65225680531 is 13508652256.

It is a de Polignac number, because none of the positive numbers 2^k-65225680531 is a prime.

It is a super-2 number, since 2×65225680531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65225620531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4561126 + ... + 4575403.

It is an arithmetic number, because the mean of its divisors is an integer number (6075792450).

Almost surely, 2^65225680531 is an apocalyptic number.

65225680531 is a deficient number, since it is larger than the sum of its proper divisors (7683828869).

65225680531 is a wasteful number, since it uses less digits than its factorization.

65225680531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136610 (or 9136599 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 65225680531 in words is "sixty-five billion, two hundred twenty-five million, six hundred eighty thousand, five hundred thirty-one".