9998525 has 6 divisors (see below), whose sum is σ = 12398202. Its totient is φ = 7998800.

The previous prime is 9998479. The next prime is 9998539. The reversal of 9998525 is 5258999.

It can be written as a sum of positive squares in 3 ways, for example, as 195364 + 9803161 = 442^2 + 3131^2 .

It is not a de Polignac number, because 9998525 - 2¹⁸ = 9736381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9998525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199946 + ... + 199995.

It is an arithmetic number, because the mean of its divisors is an integer number (2066367).

Almost surely, 2^9998525 is an apocalyptic number.

It is an amenable number.

9998525 is a deficient number, since it is larger than the sum of its proper divisors (2399677).

9998525 is a wasteful number, since it uses less digits than its factorization.

9998525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399951 (or 399946 counting only the distinct ones).

The product of its digits is 291600, while the sum is 47.

The square root of 9998525 is about 3162.0444335904. The cubic root of 9998525 is about 215.4328758451.

The spelling of 9998525 in words is "nine million, nine hundred ninety-eight thousand, five hundred twenty-five".