3925580645 has 16 divisors (see below), whose sum is σ = 5385571968. Its totient is φ = 2690867520.

The previous prime is 3925580579. The next prime is 3925580647. The reversal of 3925580645 is 5460855293.

It is not a de Polignac number, because 3925580645 - 2¹⁶ = 3925515109 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3925580645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925580647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87830 + ... + 124760.

It is an arithmetic number, because the mean of its divisors is an integer number (336598248).

Almost surely, 2^3925580645 is an apocalyptic number.

3925580645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3925580645 is a deficient number, since it is larger than the sum of its proper divisors (1459991323).

3925580645 is a wasteful number, since it uses less digits than its factorization.

3925580645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39980.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The square root of 3925580645 is about 62654.4543109267. The cubic root of 3925580645 is about 1577.4949146873.

The spelling of 3925580645 in words is "three billion, nine hundred twenty-five million, five hundred eighty thousand, six hundred forty-five".