1225353444000 has 192 divisors, whose sum is σ = 4587723608832. Its totient is φ = 280080768000.

The previous prime is 1225353443999. The next prime is 1225353444071. The reversal of 1225353444000 is 4443535221.

It is a super-2 number, since 2×1225353444000² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7209771 + ... + 7377770.

It is an arithmetic number, because the mean of its divisors is an integer number (23894393796).

Almost surely, 2^{1225353444000} is an apocalyptic number.

1225353444000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225353444000 is an abundant number, since it is smaller than the sum of its proper divisors (3362370164832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225353444000 is a wasteful number, since it uses less digits than its factorization.

1225353444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14587576 (or 14587558 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 1225353444000 its reverse (4443535221), we get a palindrome (1229796979221).

The spelling of 1225353444000 in words is "one trillion, two hundred twenty-five billion, three hundred fifty-three million, four hundred forty-four thousand".