1253505250 has 32 divisors (see below), whose sum is σ = 2348691696. Its totient is φ = 500947200.

The previous prime is 1253505233. The next prime is 1253505257. The reversal of 1253505250 is 525053521.

It can be written as a sum of positive squares in 8 ways, for example, as 242456041 + 1011049209 = 15571^2 + 31797^2 .

It is not an unprimeable number, because it can be changed into a prime (1253505257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466912 + ... + 469588.

Almost surely, 2^1253505250 is an apocalyptic number.

1253505250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253505250 is a deficient number, since it is larger than the sum of its proper divisors (1095186446).

1253505250 is a wasteful number, since it uses less digits than its factorization.

1253505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567 (or 4557 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 1253505250 is about 35404.8760766084. The cubic root of 1253505250 is about 1078.2233162459.

Adding to 1253505250 its reverse (525053521), we get a palindrome (1778558771).

The spelling of 1253505250 in words is "one billion, two hundred fifty-three million, five hundred five thousand, two hundred fifty".