9926878983025 has 81 divisors (see below), whose sum is σ = 13242831943107. Its totient is φ = 7380187968000.

The previous prime is 9926878983011. The next prime is 9926878983031. The reversal of 9926878983025 is 5203898786299.

The square root of 9926878983025 is 3150695.

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

It can be written as a sum of positive squares in 13 ways, for example, as 20802581361 + 9906076401664 = 144231^2 + 3147392^2 .

It is not a de Polignac number, because 9926878983025 - 2⁹ = 9926878982513 is a prime.

It is a super-3 number, since 3×9926878983025³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian 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, 27048716392 + ... + 27048716758.

Almost surely, 2^{9926878983025} is an apocalyptic number.

9926878983025 is the 3150695-th square number.

9926878983025 is the 1575348-th centered octagonal number.

It is an amenable number.

9926878983025 is a deficient number, since it is larger than the sum of its proper divisors (3315952960082).

9926878983025 is an equidigital number, since it uses as much as digits as its factorization.

9926878983025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 940584960, while the sum is 76.

The spelling of 9926878983025 in words is "nine trillion, nine hundred twenty-six billion, eight hundred seventy-eight million, nine hundred eighty-three thousand, twenty-five".