1025445143140 has 96 divisors (see below), whose sum is σ = 2403375287040. Its totient is φ = 364383129600.

The previous prime is 1025445143111. The next prime is 1025445143141. The reversal of 1025445143140 is 413415445201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1025445143096 and 1025445143105.

It is not an unprimeable number, because it can be changed into a prime (1025445143141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1474576 + ... + 2055544.

It is an arithmetic number, because the mean of its divisors is an integer number (25035159240).

Almost surely, 2^{1025445143140} is an apocalyptic number.

1025445143140 is a gapful number since it is divisible by the number (10) 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 1025445143140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201687643520).

1025445143140 is an abundant number, since it is smaller than the sum of its proper divisors (1377930143900).

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

1025445143140 is a wasteful number, since it uses less digits than its factorization.

1025445143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581173 (or 581171 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 1025445143140 in words is "one trillion, twenty-five billion, four hundred forty-five million, one hundred forty-three thousand, one hundred forty".