4125721330 has 16 divisors (see below), whose sum is σ = 7863139800. Its totient is φ = 1553212672.

The previous prime is 4125721283. The next prime is 4125721331. The reversal of 4125721330 is 331275214.

It can be written as a sum of positive squares in 4 ways, for example, as 4102786809 + 22934521 = 64053^2 + 4789^2 .

It is not an unprimeable number, because it can be changed into a prime (4125721331) 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, 12134305 + ... + 12134644.

Almost surely, 2^4125721330 is an apocalyptic number.

4125721330 is a deficient number, since it is larger than the sum of its proper divisors (3737418470).

4125721330 is a wasteful number, since it uses less digits than its factorization.

4125721330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268973.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 4125721330 is about 64231.7781942864. The cubic root of 4125721330 is about 1603.8606420035.

Adding to 4125721330 its reverse (331275214), we get a palindrome (4456996544).

The spelling of 4125721330 in words is "four billion, one hundred twenty-five million, seven hundred twenty-one thousand, three hundred thirty".