65250001 has 2 divisors, whose sum is σ = 65250002. Its totient is φ = 65250000.

The previous prime is 65249999. The next prime is 65250043. The reversal of 65250001 is 10005256.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51854401 + 13395600 = 7201^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 65250001 - 2¹ = 65249999 is a prime.

Together with 65249999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65250061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32625000 + 32625001.

It is an arithmetic number, because the mean of its divisors is an integer number (32625001).

Almost surely, 2^65250001 is an apocalyptic number.

It is an amenable number.

65250001 is a deficient number, since it is larger than the sum of its proper divisors (1).

65250001 is an equidigital number, since it uses as much as digits as its factorization.

65250001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 65250001 is about 8077.7472726002. The cubic root of 65250001 is about 402.5873961166.

Adding to 65250001 its reverse (10005256), we get a palindrome (75255257).

It can be divided in two parts, 652 and 50001, that added together give a cube (50653 = 37³).

The spelling of 65250001 in words is "sixty-five million, two hundred fifty thousand, one".