4025780065 has 16 divisors (see below), whose sum is σ = 4962290688. Its totient is φ = 3133848256.

The previous prime is 4025780051. The next prime is 4025780071. The reversal of 4025780065 is 5600875204.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4025780065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8857 + ... + 90166.

It is an arithmetic number, because the mean of its divisors is an integer number (310143168).

Almost surely, 2^4025780065 is an apocalyptic number.

It is an amenable number.

4025780065 is a deficient number, since it is larger than the sum of its proper divisors (936510623).

4025780065 is a wasteful number, since it uses less digits than its factorization.

4025780065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99248.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 4025780065 is about 63449.0351778496. The cubic root of 4025780065 is about 1590.8040268542.

The spelling of 4025780065 in words is "four billion, twenty-five million, seven hundred eighty thousand, sixty-five".