1225512144736 has 48 divisors (see below), whose sum is σ = 2637702325440. Its totient is φ = 555858071680.

The previous prime is 1225512144677. The next prime is 1225512144737. The reversal of 1225512144736 is 6374412155221.

It is a super-2 number, since 2×1225512144736² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1225512144692 and 1225512144701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225512144737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563206 + ... + 3891973.

It is an arithmetic number, because the mean of its divisors is an integer number (54952131780).

Almost surely, 2^{1225512144736} is an apocalyptic number.

1225512144736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1225512144736 is an abundant number, since it is smaller than the sum of its proper divisors (1412190180704).

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

1225512144736 is a wasteful number, since it uses less digits than its factorization.

1225512144736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7455667 (or 7455659 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

Adding to 1225512144736 its reverse (6374412155221), we get a palindrome (7599924299957).

The spelling of 1225512144736 in words is "one trillion, two hundred twenty-five billion, five hundred twelve million, one hundred forty-four thousand, seven hundred thirty-six".