4725735661 has 8 divisors (see below), whose sum is σ = 4765458680. Its totient is φ = 4686170112.

The previous prime is 4725735601. The next prime is 4725735671. The reversal of 4725735661 is 1665375274.

It can be written as a sum of positive squares in 4 ways, for example, as 5221225 + 4720514436 = 2285^2 + 68706^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4725735661 - 2¹¹ = 4725733613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4725735601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21295 + ... + 99523.

It is an arithmetic number, because the mean of its divisors is an integer number (595682335).

Almost surely, 2^4725735661 is an apocalyptic number.

It is an amenable number.

4725735661 is a deficient number, since it is larger than the sum of its proper divisors (39723019).

4725735661 is a wasteful number, since it uses less digits than its factorization.

4725735661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78735.

The product of its digits is 1058400, while the sum is 46.

The square root of 4725735661 is about 68743.9863624448. The cubic root of 4725735661 is about 1678.1204959918.

The spelling of 4725735661 in words is "four billion, seven hundred twenty-five million, seven hundred thirty-five thousand, six hundred sixty-one".