998732125 has 8 divisors (see below), whose sum is σ = 1246417848. Its totient is φ = 798985600.

The previous prime is 998732123. The next prime is 998732143. The reversal of 998732125 is 521237899.

998732125 = 22346² + 22347².

It can be written as a sum of positive squares in 4 ways, for example, as 170328601 + 828403524 = 13051^2 + 28782^2 .

It is not a de Polignac number, because 998732125 - 2¹ = 998732123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998732123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3994804 + ... + 3995053.

It is an arithmetic number, because the mean of its divisors is an integer number (155802231).

Almost surely, 2^998732125 is an apocalyptic number.

998732125 is the 22347-th centered square number.

It is an amenable number.

998732125 is a deficient number, since it is larger than the sum of its proper divisors (247685723).

998732125 is an equidigital number, since it uses as much as digits as its factorization.

998732125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7989872 (or 7989862 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 998732125 is about 31602.7233794811. The cubic root of 998732125 is about 999.5771962622.

The spelling of 998732125 in words is "nine hundred ninety-eight million, seven hundred thirty-two thousand, one hundred twenty-five".