978843103225 has 81 divisors (see below), whose sum is σ = 1360850523597. Its totient is φ = 698095944000.

The previous prime is 978843103177. The next prime is 978843103229. The reversal of 978843103225 is 522301348879.

It is a happy number.

The square root of 978843103225 is 989365.

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 252298257849 + 726544845376 = 502293^2 + 852376^2 .

It is not a de Polignac number, because 978843103225 - 2³⁵ = 944483364857 is a prime.

It is a super-2 number, since 2×978843103225² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (978843103229) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1993570230 + ... + 1993570720.

Almost surely, 2^978843103225 is an apocalyptic number.

978843103225 is the 989365-th square number.

978843103225 is the 494683-rd centered octagonal number.

It is an amenable number.

978843103225 is a deficient number, since it is larger than the sum of its proper divisors (382007420372).

978843103225 is an equidigital number, since it uses as much as digits as its factorization.

978843103225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 978843103225 in words is "nine hundred seventy-eight billion, eight hundred forty-three million, one hundred three thousand, two hundred twenty-five".