1244225025 has 18 divisors (see below), whose sum is σ = 2228545670. Its totient is φ = 663586560.

The previous prime is 1244224973. The next prime is 1244225039. The reversal of 1244225025 is 5205224421.

It can be written as a sum of positive squares in 3 ways, for example, as 333573696 + 910651329 = 18264^2 + 30177^2 .

It is not a de Polignac number, because 1244225025 - 2¹⁹ = 1243700737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244225025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2764720 + ... + 2765169.

Almost surely, 2^1244225025 is an apocalyptic number.

1244225025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244225025 is a deficient number, since it is larger than the sum of its proper divisors (984320645).

1244225025 is a wasteful number, since it uses less digits than its factorization.

1244225025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529905 (or 5529897 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1244225025 is about 35273.5740321278. The cubic root of 1244225025 is about 1075.5558762022. Note that the first 3 decimals are identical.

Adding to 1244225025 its reverse (5205224421), we get a palindrome (6449449446).

The spelling of 1244225025 in words is "one billion, two hundred forty-four million, two hundred twenty-five thousand, twenty-five".