9212772915025 has 27 divisors (see below), whose sum is σ = 11621874107281. Its totient is φ = 7244595198080.

The previous prime is 9212772915023. The next prime is 9212772915067. The reversal of 9212772915025 is 5205192772129.

The square root of 9212772915025 is 3035255.

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 839875103809 + 8372897811216 = 916447^2 + 2893596^2 .

It is not a de Polignac number, because 9212772915025 - 2¹ = 9212772915023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9212772915023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 895395081 + ... + 895405369.

Almost surely, 2^{9212772915025} is an apocalyptic number.

9212772915025 is the 3035255-th square number.

9212772915025 is the 1517628-th centered octagonal number.

It is an amenable number.

9212772915025 is a deficient number, since it is larger than the sum of its proper divisors (2409101192256).

9212772915025 is an frugal number, since it uses more digits than its factorization.

9212772915025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20706 (or 10353 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 52.

The spelling of 9212772915025 in words is "nine trillion, two hundred twelve billion, seven hundred seventy-two million, nine hundred fifteen thousand, twenty-five".