10971515025 has 27 divisors (see below), whose sum is σ = 19654017019. Its totient is φ = 5850636720.

The previous prime is 10971515003. The next prime is 10971515033. The reversal of 10971515025 is 52051517901.

The square root of 10971515025 is 104745.

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

10971515025 is a `hidden beast` number, since 10 + 97 + 1 + 51 + 502 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3949745409 + 7021769616 = 62847^2 + 83796^2 .

It is not a de Polignac number, because 10971515025 - 2¹¹ = 10971512977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1567684 + ... + 1574666.

Almost surely, 2^10971515025 is an apocalyptic number.

10971515025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10971515025 is the 104745-th square number.

10971515025 is the 52373-rd centered octagonal number.

It is an amenable number.

10971515025 is a deficient number, since it is larger than the sum of its proper divisors (8682501994).

10971515025 is an frugal number, since it uses more digits than its factorization.

10971515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13982 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 36.

Multiplying 10971515025 by its sum of digits (36), we get a square (394974540900 = 628470²).

The spelling of 10971515025 in words is "ten billion, nine hundred seventy-one million, five hundred fifteen thousand, twenty-five".