1097265625 has 27 divisors (see below), whose sum is σ = 1397948503. Its totient is φ = 861250000.

The previous prime is 1097265601. The next prime is 1097265641. The reversal of 1097265625 is 5265627901.

The square root of 1097265625 is 33125.

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 204690249 + 892575376 = 14307^2 + 29876^2 .

It is not a de Polignac number, because 1097265625 - 2⁵ = 1097265593 is a prime.

It is a Duffinian 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, 20703099 + ... + 20703151.

Almost surely, 2^1097265625 is an apocalyptic number.

1097265625 is the 33125-th square number.

1097265625 is the 16563-rd centered octagonal number.

It is an amenable number.

1097265625 is a deficient number, since it is larger than the sum of its proper divisors (300682878).

1097265625 is an frugal number, since it uses more digits than its factorization.

1097265625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The cubic root of 1097265625 is about 1031.4240599982.

The spelling of 1097265625 in words is "one billion, ninety-seven million, two hundred sixty-five thousand, six hundred twenty-five".