999725141 has 2 divisors, whose sum is σ = 999725142. Its totient is φ = 999725140.

The previous prime is 999725131. The next prime is 999725161. The reversal of 999725141 is 141527999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933546916 + 66178225 = 30554^2 + 8135^2 .

It is an emirp because it is prime and its reverse (141527999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999725141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999725101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499862570 + 499862571.

It is an arithmetic number, because the mean of its divisors is an integer number (499862571).

Almost surely, 2^999725141 is an apocalyptic number.

It is an amenable number.

999725141 is a deficient number, since it is larger than the sum of its proper divisors (1).

999725141 is an equidigital number, since it uses as much as digits as its factorization.

999725141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 47.

The square root of 999725141 is about 31618.4304006382. The cubic root of 999725141 is about 999.9083719379.

The spelling of 999725141 in words is "nine hundred ninety-nine million, seven hundred twenty-five thousand, one hundred forty-one".