1425818621328 has 80 divisors (see below), whose sum is σ = 3737652518976. Its totient is φ = 468281364480.

The previous prime is 1425818621321. The next prime is 1425818621351. The reversal of 1425818621328 is 8231268185241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1425818621321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3215163 + ... + 3631653.

Almost surely, 2^{1425818621328} 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 1425818621328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868826259488).

1425818621328 is an abundant number, since it is smaller than the sum of its proper divisors (2311833897648).

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

1425818621328 is a wasteful number, since it uses less digits than its factorization.

1425818621328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417552 (or 417546 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The spelling of 1425818621328 in words is "one trillion, four hundred twenty-five billion, eight hundred eighteen million, six hundred twenty-one thousand, three hundred twenty-eight".