998442225 has 72 divisors (see below), whose sum is σ = 2003806272. Its totient is φ = 470966400.

The previous prime is 998442199. The next prime is 998442233. The reversal of 998442225 is 522244899.

It is not a de Polignac number, because 998442225 - 2¹⁸ = 998180081 is a prime.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 86124 + ... + 97026.

Almost surely, 2^998442225 is an apocalyptic number.

It is an amenable number.

998442225 is an abundant number, since it is smaller than the sum of its proper divisors (1005364047).

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

998442225 is a wasteful number, since it uses less digits than its factorization.

998442225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10967 (or 10959 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 998442225 is about 31598.1364165674. The cubic root of 998442225 is about 999.4804718039.

The spelling of 998442225 in words is "nine hundred ninety-eight million, four hundred forty-two thousand, two hundred twenty-five".