1118568025 has 9 divisors (see below), whose sum is σ = 1387231741. Its totient is φ = 894720640.

The previous prime is 1118567999. The next prime is 1118568029. The reversal of 1118568025 is 5208658111.

The square root of 1118568025 is 33445.

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 55547209 + 1063020816 = 7453^2 + 32604^2 .

It is not a de Polignac number, because 1118568025 - 2¹³ = 1118559833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118568029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 163881 + ... + 170569.

Almost surely, 2^1118568025 is an apocalyptic number.

1118568025 is the 33445-th square number.

1118568025 is the 16723-rd centered octagonal number.

It is an amenable number.

1118568025 is a deficient number, since it is larger than the sum of its proper divisors (268663716).

1118568025 is an frugal number, since it uses more digits than its factorization.

1118568025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13388 (or 6694 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 37.

The cubic root of 1118568025 is about 1038.0560410317.

The spelling of 1118568025 in words is "one billion, one hundred eighteen million, five hundred sixty-eight thousand, twenty-five".