1151530225 has 6 divisors (see below), whose sum is σ = 1427897510. Its totient is φ = 921224160.

The previous prime is 1151530201. The next prime is 1151530249. The reversal of 1151530225 is 5220351511.

It is an interprime number because it is at equal distance from previous prime (1151530201) and next prime (1151530249).

It can be written as a sum of positive squares in 3 ways, for example, as 319265424 + 832264801 = 17868^2 + 28849^2 .

It is not a de Polignac number, because 1151530225 - 2⁷ = 1151530097 is a prime.

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: 46061209 = 1151530225 / (1 + 1 + 5 + 1 + 5 + 3 + 0 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1151530225.

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, 23030580 + ... + 23030629.

Almost surely, 2^1151530225 is an apocalyptic number.

It is an amenable number.

1151530225 is a deficient number, since it is larger than the sum of its proper divisors (276367285).

1151530225 is an equidigital number, since it uses as much as digits as its factorization.

1151530225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46061219 (or 46061214 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1151530225 is about 33934.2043519514. The cubic root of 1151530225 is about 1048.1540430796.

Adding to 1151530225 its reverse (5220351511), we get a palindrome (6371881736).

The spelling of 1151530225 in words is "one billion, one hundred fifty-one million, five hundred thirty thousand, two hundred twenty-five".