998244025 has 27 divisors (see below), whose sum is σ = 1269767533. Its totient is φ = 778500800.

The previous prime is 998244001. The next prime is 998244041. The reversal of 998244025 is 520442899.

It is a happy number.

The square root of 998244025 is 31595.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 207734569 + 790509456 = 14413^2 + 28116^2 .

It is not a de Polignac number, because 998244025 - 2⁵ = 998243993 is a prime.

It is a super-2 number, since 2×998244025² = 1992982266896401250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11216181 + ... + 11216269.

Almost surely, 2^998244025 is an apocalyptic number.

998244025 is the 31595-th square number.

998244025 is the 15798-th centered octagonal number.

It is an amenable number.

998244025 is a deficient number, since it is larger than the sum of its proper divisors (271523508).

998244025 is an frugal number, since it uses more digits than its factorization.

998244025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The cubic root of 998244025 is about 999.4143320600.

The spelling of 998244025 in words is "nine hundred ninety-eight million, two hundred forty-four thousand, twenty-five".