1225577745008 has 80 divisors (see below), whose sum is σ = 2536228147200. Its totient is φ = 572448280320.

The previous prime is 1225577744987. The next prime is 1225577745031. The reversal of 1225577745008 is 8005477755221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126617513 + ... + 126627191.

It is an arithmetic number, because the mean of its divisors is an integer number (31702851840).

Almost surely, 2^{1225577745008} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225577745008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268114073600).

1225577745008 is an abundant number, since it is smaller than the sum of its proper divisors (1310650402192).

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

1225577745008 is a wasteful number, since it uses less digits than its factorization.

1225577745008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18550 (or 18544 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 53.

The spelling of 1225577745008 in words is "one trillion, two hundred twenty-five billion, five hundred seventy-seven million, seven hundred forty-five thousand, eight".