1244402430225 has 24 divisors (see below), whose sum is σ = 2057529044832. Its totient is φ = 663643545600.

The previous prime is 1244402430223. The next prime is 1244402430281. The reversal of 1244402430225 is 5220342044421.

It is not a de Polignac number, because 1244402430225 - 2¹ = 1244402430223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244402430223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 881154 + ... + 1806996.

It is an arithmetic number, because the mean of its divisors is an integer number (85730376868).

Almost surely, 2^{1244402430225} is an apocalyptic number.

1244402430225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244402430225 is a deficient number, since it is larger than the sum of its proper divisors (813126614607).

1244402430225 is a wasteful number, since it uses less digits than its factorization.

1244402430225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943777 (or 943772 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 1244402430225 its reverse (5220342044421), we get a palindrome (6464744474646).

The spelling of 1244402430225 in words is "one trillion, two hundred forty-four billion, four hundred two million, four hundred thirty thousand, two hundred twenty-five".