1071808025 has 6 divisors (see below), whose sum is σ = 1329041982. Its totient is φ = 857446400.

The previous prime is 1071807953. The next prime is 1071808037. The reversal of 1071808025 is 5208081701.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1471369 + 1070336656 = 1213^2 + 32716^2 .

It is not a de Polignac number, because 1071808025 - 2²² = 1067613721 is a prime.

It is a super-2 number, since 2×1071808025² = 2297544884908801250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1071807982 and 1071808000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21436136 + ... + 21436185.

It is an arithmetic number, because the mean of its divisors is an integer number (221506997).

Almost surely, 2^1071808025 is an apocalyptic number.

It is an amenable number.

1071808025 is a deficient number, since it is larger than the sum of its proper divisors (257233957).

1071808025 is an equidigital number, since it uses as much as digits as its factorization.

1071808025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42872331 (or 42872326 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 1071808025 is about 32738.4792713406. The cubic root of 1071808025 is about 1023.3848924380.

Adding to 1071808025 its reverse (5208081701), we get a palindrome (6279889726).

The spelling of 1071808025 in words is "one billion, seventy-one million, eight hundred eight thousand, twenty-five".