1259725971280 has 160 divisors (see below), whose sum is σ = 3441444019200. Its totient is φ = 419878225920.

The previous prime is 1259725971247. The next prime is 1259725971307. The reversal of 1259725971280 is 821795279521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3761070 + ... + 4082290.

It is an arithmetic number, because the mean of its divisors is an integer number (21509025120).

Almost surely, 2^{1259725971280} is an apocalyptic number.

1259725971280 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 1259725971280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1720722009600).

1259725971280 is an abundant number, since it is smaller than the sum of its proper divisors (2181718047920).

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

1259725971280 is a wasteful number, since it uses less digits than its factorization.

1259725971280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321437 (or 321431 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 58.

The spelling of 1259725971280 in words is "one trillion, two hundred fifty-nine billion, seven hundred twenty-five million, nine hundred seventy-one thousand, two hundred eighty".