842989725 has 36 divisors (see below), whose sum is σ = 1546731732. Its totient is φ = 438624000.

The previous prime is 842989723. The next prime is 842989747. The reversal of 842989725 is 527989248.

It can be written as a sum of positive squares in 6 ways, for example, as 52142841 + 790846884 = 7221^2 + 28122^2 .

It is not a de Polignac number, because 842989725 - 2¹ = 842989723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842989723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36466 + ... + 54915.

Almost surely, 2^842989725 is an apocalyptic number.

It is an amenable number.

842989725 is a deficient number, since it is larger than the sum of its proper divisors (703742007).

842989725 is a wasteful number, since it uses less digits than its factorization.

842989725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91438 (or 91430 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 842989725 is about 29034.2853364776. The cubic root of 842989725 is about 944.6568839169.

The spelling of 842989725 in words is "eight hundred forty-two million, nine hundred eighty-nine thousand, seven hundred twenty-five".