4025207765 has 4 divisors (see below), whose sum is σ = 4830249324. Its totient is φ = 3220166208.

The previous prime is 4025207729. The next prime is 4025207773. The reversal of 4025207765 is 5677025204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 626550961 + 3398656804 = 25031^2 + 58298^2 .

It is a cyclic number.

It is not a de Polignac number, because 4025207765 - 2¹⁴ = 4025191381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402520772 + ... + 402520781.

It is an arithmetic number, because the mean of its divisors is an integer number (1207562331).

Almost surely, 2^4025207765 is an apocalyptic number.

It is an amenable number.

4025207765 is a deficient number, since it is larger than the sum of its proper divisors (805041559).

4025207765 is an equidigital number, since it uses as much as digits as its factorization.

4025207765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805041558.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 4025207765 is about 63444.5250987034. The cubic root of 4025207765 is about 1590.7286410263.

The spelling of 4025207765 in words is "four billion, twenty-five million, two hundred seven thousand, seven hundred sixty-five".