9861725 has 12 divisors (see below), whose sum is σ = 12288276. Its totient is φ = 7850880.

The previous prime is 9861713. The next prime is 9861727. The reversal of 9861725 is 5271689.

It can be written as a sum of positive squares in 6 ways, for example, as 1229881 + 8631844 = 1109^2 + 2938^2 .

It is not a de Polignac number, because 9861725 - 2⁶ = 9861661 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4979 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (1024023).

Almost surely, 2^9861725 is an apocalyptic number.

It is an amenable number.

9861725 is a deficient number, since it is larger than the sum of its proper divisors (2426551).

9861725 is a wasteful number, since it uses less digits than its factorization.

9861725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1931 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 9861725 is about 3140.3383575659. The cubic root of 9861725 is about 214.4458416889.

The spelling of 9861725 in words is "nine million, eight hundred sixty-one thousand, seven hundred twenty-five".