1145113225 has 6 divisors (see below), whose sum is σ = 1419940430. Its totient is φ = 916090560.

The previous prime is 1145113219. The next prime is 1145113271. The reversal of 1145113225 is 5223115411.

It can be written as a sum of positive squares in 3 ways, for example, as 359936784 + 785176441 = 18972^2 + 28021^2 .

It is not a de Polignac number, because 1145113225 - 2⁹ = 1145112713 is a prime.

It is a super-2 number, since 2×1145113225² = 2622568596139801250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 45804529 = 1145113225 / (1 + 1 + 4 + 5 + 1 + 1 + 3 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1145113225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22902240 + ... + 22902289.

Almost surely, 2^1145113225 is an apocalyptic number.

It is an amenable number.

1145113225 is a deficient number, since it is larger than the sum of its proper divisors (274827205).

1145113225 is an equidigital number, since it uses as much as digits as its factorization.

1145113225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45804539 (or 45804534 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1145113225 is about 33839.5216426001. The cubic root of 1145113225 is about 1046.2034394638.

Adding to 1145113225 its reverse (5223115411), we get a palindrome (6368228636).

The spelling of 1145113225 in words is "one billion, one hundred forty-five million, one hundred thirteen thousand, two hundred twenty-five".