1256560 has 40 divisors (see below), whose sum is σ = 2968560. Its totient is φ = 494592.

The previous prime is 1256543. The next prime is 1256573. The reversal of 1256560 is 656521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8971 + ... + 9109.

It is an arithmetic number, because the mean of its divisors is an integer number (74214).

2^1256560 is an apocalyptic number.

1256560 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 1256560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484280).

1256560 is an abundant number, since it is smaller than the sum of its proper divisors (1712000).

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

1256560 is a wasteful number, since it uses less digits than its factorization.

1256560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1256560 is about 1120.9638709611. The cubic root of 1256560 is about 107.9098470337.

The spelling of 1256560 in words is "one million, two hundred fifty-six thousand, five hundred sixty".