3565635725 has 24 divisors (see below), whose sum is σ = 4591367592. Its totient is φ = 2744755200.

The previous prime is 3565635701. The next prime is 3565635727. The reversal of 3565635725 is 5275365653.

It can be written as a sum of positive squares in 12 ways, for example, as 2104790884 + 1460844841 = 45878^2 + 38221^2 .

It is not a de Polignac number, because 3565635725 - 2¹⁶ = 3565570189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3565635725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3565635727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50999 + ... + 98651.

It is an arithmetic number, because the mean of its divisors is an integer number (191306983).

Almost surely, 2^3565635725 is an apocalyptic number.

It is an amenable number.

3565635725 is a deficient number, since it is larger than the sum of its proper divisors (1025731867).

3565635725 is a wasteful number, since it uses less digits than its factorization.

3565635725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47777 (or 47772 counting only the distinct ones).

The product of its digits is 2835000, while the sum is 47.

The square root of 3565635725 is about 59712.9443671973. The cubic root of 3565635725 is about 1527.7266600148.

The spelling of 3565635725 in words is "three billion, five hundred sixty-five million, six hundred thirty-five thousand, seven hundred twenty-five".