4009025765 has 16 divisors (see below), whose sum is σ = 5095476720. Its totient is φ = 3017579520.

The previous prime is 4009025759. The next prime is 4009025767. The reversal of 4009025765 is 5675209004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 77986561 + 3931039204 = 8831^2 + 62698^2 .

It is not a de Polignac number, because 4009025765 - 2⁶ = 4009025701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4009025767) by changing a digit.

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, 356651 + ... + 367719.

It is an arithmetic number, because the mean of its divisors is an integer number (318467295).

Almost surely, 2^4009025765 is an apocalyptic number.

It is an amenable number.

4009025765 is a deficient number, since it is larger than the sum of its proper divisors (1086450955).

4009025765 is a wasteful number, since it uses less digits than its factorization.

4009025765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15352.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 4009025765 is about 63316.8679342243. The cubic root of 4009025765 is about 1588.5941141307.

The spelling of 4009025765 in words is "four billion, nine million, twenty-five thousand, seven hundred sixty-five".