1225512144724 has 72 divisors (see below), whose sum is σ = 2587406649408. Its totient is φ = 497462584320.

The previous prime is 1225512144677. The next prime is 1225512144737. The reversal of 1225512144724 is 4274412155221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54986487 + ... + 55008769.

It is an arithmetic number, because the mean of its divisors is an integer number (35936203464).

Almost surely, 2^{1225512144724} is an apocalyptic number.

1225512144724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225512144724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1293703324704).

1225512144724 is an abundant number, since it is smaller than the sum of its proper divisors (1361894504684).

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

1225512144724 is a wasteful number, since it uses less digits than its factorization.

1225512144724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27773 (or 27752 counting only the distinct ones).

The product of its digits is 179200, while the sum is 40.

Adding to 1225512144724 its reverse (4274412155221), we get a palindrome (5499924299945).

The spelling of 1225512144724 in words is "one trillion, two hundred twenty-five billion, five hundred twelve million, one hundred forty-four thousand, seven hundred twenty-four".