9867734277025 has 27 divisors (see below), whose sum is σ = 12422667801369. Its totient is φ = 7775534426880.

The previous prime is 9867734276999. The next prime is 9867734277043. The reversal of 9867734277025 is 5207724377689.

The square root of 9867734277025 is 3141295.

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 3052564571281 + 6815169705744 = 1747159^2 + 2610588^2 .

It is not a de Polignac number, because 9867734277025 - 2⁹ = 9867734276513 is a prime.

It is a super-3 number, since 3×9867734277025³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1052329137 + ... + 1052338513.

Almost surely, 2^{9867734277025} is an apocalyptic number.

9867734277025 is the 3141295-th square number.

9867734277025 is the 1570648-th centered octagonal number.

It is an amenable number.

9867734277025 is a deficient number, since it is larger than the sum of its proper divisors (2554933524344).

9867734277025 is an frugal number, since it uses more digits than its factorization.

9867734277025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18898 (or 9449 counting only the distinct ones).

The product of its (nonzero) digits is 248935680, while the sum is 67.

The spelling of 9867734277025 in words is "nine trillion, eight hundred sixty-seven billion, seven hundred thirty-four million, two hundred seventy-seven thousand, twenty-five".