9877725 has 72 divisors (see below), whose sum is σ = 20852832. Its totient is φ = 4406400.

The previous prime is 9877723. The next prime is 9877727. The reversal of 9877725 is 5277789.

It is an interprime number because it is at equal distance from previous prime (9877723) and next prime (9877727).

It is not a de Polignac number, because 9877725 - 2¹ = 9877723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9877723) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32022 + ... + 32328.

Almost surely, 2^9877725 is an apocalyptic number.

It is an amenable number.

9877725 is an abundant number, since it is smaller than the sum of its proper divisors (10975107).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9877725 is a wasteful number, since it uses less digits than its factorization.

9877725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 339 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 9877725 is about 3142.8848213067. The cubic root of 9877725 is about 214.5617537814.

The spelling of 9877725 in words is "nine million, eight hundred seventy-seven thousand, seven hundred twenty-five".