9777725 has 12 divisors (see below), whose sum is σ = 12166260. Its totient is φ = 7795200.

The previous prime is 9777707. The next prime is 9777749. The reversal of 9777725 is 5277779.

9777725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 5257849 + 4519876 = 2293^2 + 2126^2 .

It is not a de Polignac number, because 9777725 - 2⁶ = 9777661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10061 + ... + 10989.

It is an arithmetic number, because the mean of its divisors is an integer number (1013855).

Almost surely, 2^9777725 is an apocalyptic number.

It is an amenable number.

9777725 is a deficient number, since it is larger than the sum of its proper divisors (2388535).

9777725 is a wasteful number, since it uses less digits than its factorization.

9777725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its digits is 216090, while the sum is 44.

The square root of 9777725 is about 3126.9354006759. The cubic root of 9777725 is about 213.8352372569.

The spelling of 9777725 in words is "nine million, seven hundred seventy-seven thousand, seven hundred twenty-five".