641061125 has 8 divisors (see below), whose sum is σ = 800044440. Its totient is φ = 512848800.

The previous prime is 641061101. The next prime is 641061151. The reversal of 641061125 is 521160146.

It can be written as a sum of positive squares in 4 ways, for example, as 667489 + 640393636 = 817^2 + 25306^2 .

It is a de Polignac number, because none of the positive numbers 2^k-641061125 is a prime.

It is a super-3 number, since 3×641061125³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641061094 and 641061103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564120 + ... + 2564369.

It is an arithmetic number, because the mean of its divisors is an integer number (100005555).

Almost surely, 2^641061125 is an apocalyptic number.

It is an amenable number.

641061125 is a deficient number, since it is larger than the sum of its proper divisors (158983315).

641061125 is an equidigital number, since it uses as much as digits as its factorization.

641061125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128504 (or 5128494 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 641061125 is about 25319.1849197402. The cubic root of 641061125 is about 862.2498889715.

The spelling of 641061125 in words is "six hundred forty-one million, sixty-one thousand, one hundred twenty-five".