1225454820352 has 264 divisors, whose sum is σ = 2932313154624. Its totient is φ = 510134059008.

The previous prime is 1225454820311. The next prime is 1225454820361. The reversal of 1225454820352 is 2530284545221.

It is a junction number, because it is equal to n+sod(n) for n = 1225454820299 and 1225454820308.

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, 323081368 + ... + 323085160.

Almost surely, 2^{1225454820352} 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 1225454820352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466156577312).

1225454820352 is an abundant number, since it is smaller than the sum of its proper divisors (1706858334272).

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

1225454820352 is a wasteful number, since it uses less digits than its factorization.

1225454820352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 3986 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 43.

The spelling of 1225454820352 in words is "one trillion, two hundred twenty-five billion, four hundred fifty-four million, eight hundred twenty thousand, three hundred fifty-two".