1145143225 has 24 divisors (see below), whose sum is σ = 1438579800. Its totient is φ = 904197120.

The previous prime is 1145143147. The next prime is 1145143231. The reversal of 1145143225 is 5223415411.

It can be written as a sum of positive squares in 12 ways, for example, as 272118016 + 873025209 = 16496^2 + 29547^2 .

It is not a de Polignac number, because 1145143225 - 2²³ = 1136754617 is a prime.

It is a super-2 number, since 2×1145143225² = 2622706011526801250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145143193 and 1145143202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 643537 + ... + 645313.

It is an arithmetic number, because the mean of its divisors is an integer number (59940825).

Almost surely, 2^1145143225 is an apocalyptic number.

It is an amenable number.

1145143225 is a deficient number, since it is larger than the sum of its proper divisors (293436575).

1145143225 is a wasteful number, since it uses less digits than its factorization.

1145143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2104 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 1145143225 is about 33839.9649083742. The cubic root of 1145143225 is about 1046.2125756285.

Adding to 1145143225 its reverse (5223415411), we get a palindrome (6368558636).

The spelling of 1145143225 in words is "one billion, one hundred forty-five million, one hundred forty-three thousand, two hundred twenty-five".