1145241225 has 72 divisors (see below), whose sum is σ = 2108215512. Its totient is φ = 594048000.

The previous prime is 1145241217. The next prime is 1145241257. The reversal of 1145241225 is 5221425411.

It is a happy number.

1145241225 is a `hidden beast` number, since 1 + 14 + 524 + 122 + 5 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 34152336 + 1111088889 = 5844^2 + 33333^2 .

It is not a de Polignac number, because 1145241225 - 2³ = 1145241217 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1633375 + ... + 1634075.

It is an arithmetic number, because the mean of its divisors is an integer number (29280771).

Almost surely, 2^1145241225 is an apocalyptic number.

1145241225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145241225 is a deficient number, since it is larger than the sum of its proper divisors (962974287).

1145241225 is a wasteful number, since it uses less digits than its factorization.

1145241225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 899 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1145241225 is about 33841.4128694415. The cubic root of 1145241225 is about 1046.2424193213.

Adding to 1145241225 its reverse (5221425411), we get a palindrome (6366666636).

The spelling of 1145241225 in words is "one billion, one hundred forty-five million, two hundred forty-one thousand, two hundred twenty-five".