9917525 has 12 divisors (see below), whose sum is σ = 12945600. Its totient is φ = 7516080.

The previous prime is 9917521. The next prime is 9917539. The reversal of 9917525 is 5257199.

9917525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9917525 - 2² = 9917521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917521) 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, 9965 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (1078800).

Almost surely, 2^9917525 is an apocalyptic number.

9917525 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9917525 is a deficient number, since it is larger than the sum of its proper divisors (3028075).

9917525 is a wasteful number, since it uses less digits than its factorization.

9917525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20908 (or 20903 counting only the distinct ones).

The product of its digits is 28350, while the sum is 38.

The square root of 9917525 is about 3149.2102184516. The cubic root of 9917525 is about 214.8495431936.

The spelling of 9917525 in words is "nine million, nine hundred seventeen thousand, five hundred twenty-five".