65725969 has 2 divisors, whose sum is σ = 65725970. Its totient is φ = 65725968.

The previous prime is 65725963. The next prime is 65725981. The reversal of 65725969 is 96952756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 439569 = 8080^2 + 663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65725969 is a prime.

It is a super-2 number, since 2×65725969² = 8639806001977922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65725963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32862984 + 32862985.

It is an arithmetic number, because the mean of its divisors is an integer number (32862985).

Almost surely, 2^65725969 is an apocalyptic number.

It is an amenable number.

65725969 is a deficient number, since it is larger than the sum of its proper divisors (1).

65725969 is an equidigital number, since it uses as much as digits as its factorization.

65725969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 49.

The square root of 65725969 is about 8107.1554197511. The cubic root of 65725969 is about 403.5639206178.

The spelling of 65725969 in words is "sixty-five million, seven hundred twenty-five thousand, nine hundred sixty-nine".