1225140044450 has 144 divisors (see below), whose sum is σ = 2679719112000. Its totient is φ = 415474416000.

The previous prime is 1225140044437. The next prime is 1225140044467. The reversal of 1225140044450 is 544400415221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 346180781 + ... + 346184319.

It is an arithmetic number, because the mean of its divisors is an integer number (18609160500).

Almost surely, 2^{1225140044450} is an apocalyptic number.

1225140044450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225140044450 is an abundant number, since it is smaller than the sum of its proper divisors (1454579067550).

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

1225140044450 is a wasteful number, since it uses less digits than its factorization.

1225140044450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065 (or 5053 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 1225140044450 its reverse (544400415221), we get a palindrome (1769540459671).

The spelling of 1225140044450 in words is "one trillion, two hundred twenty-five billion, one hundred forty million, forty-four thousand, four hundred fifty".