9278725 has 12 divisors (see below), whose sum is σ = 11566720. Its totient is φ = 7383600.

The previous prime is 9278723. The next prime is 9278743. The reversal of 9278725 is 5278729.

It is not a de Polignac number, because 9278725 - 2¹ = 9278723 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9278723) 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, 4396 + ... + 6154.

Almost surely, 2^9278725 is an apocalyptic number.

9278725 is the 1759-th octagonal number.

It is an amenable number.

9278725 is a deficient number, since it is larger than the sum of its proper divisors (2287995).

9278725 is a wasteful number, since it uses less digits than its factorization.

9278725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1975 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 9278725 is about 3046.0999655297. The cubic root of 9278725 is about 210.1338904294.

The spelling of 9278725 in words is "nine million, two hundred seventy-eight thousand, seven hundred twenty-five".