998270748225 has 81 divisors (see below), whose sum is σ = 1857442172547. Its totient is φ = 532195252560.

The previous prime is 998270748203. The next prime is 998270748247. The reversal of 998270748225 is 522847072899.

The square root of 998270748225 is 999135.

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

998270748225 is a `hidden beast` number, since 9 + 9 + 82 + 70 + 7 + 482 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (998270748203) and next prime (998270748247).

It can be written as a sum of positive squares in only one way, i.e., 359377469361 + 638893278864 = 599481^2 + 799308^2 .

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 998270748225 - 2²³ = 998262359617 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 404648442 + ... + 404650908.

Almost surely, 2^998270748225 is an apocalyptic number.

998270748225 is the 999135-th square number.

998270748225 is the 499568-th centered octagonal number.

It is an amenable number.

998270748225 is a deficient number, since it is larger than the sum of its proper divisors (859171424322).

998270748225 is an frugal number, since it uses more digits than its factorization.

998270748225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 998270748225 in words is "nine hundred ninety-eight billion, two hundred seventy million, seven hundred forty-eight thousand, two hundred twenty-five".