1025890661460 has 384 divisors, whose sum is σ = 3530586931200. Its totient is φ = 217379635200.

The previous prime is 1025890661459. The next prime is 1025890661473. The reversal of 1025890661460 is 641660985201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 71230260 + ... + 71244660.

It is an arithmetic number, because the mean of its divisors is an integer number (9194236800).

Almost surely, 2^{1025890661460} is an apocalyptic number.

1025890661460 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 1025890661460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765293465600).

1025890661460 is an abundant number, since it is smaller than the sum of its proper divisors (2504696269740).

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

1025890661460 is a wasteful number, since it uses less digits than its factorization.

1025890661460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14631 (or 14629 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 1025890661460 in words is "one trillion, twenty-five billion, eight hundred ninety million, six hundred sixty-one thousand, four hundred sixty".