1258256 has 20 divisors (see below), whose sum is σ = 2566800. Its totient is φ = 595872.

The previous prime is 1258241. The next prime is 1258267. The reversal of 1258256 is 6528521.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (128340).

2^1258256 is an apocalyptic number.

1258256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1258256 is an abundant number, since it is smaller than the sum of its proper divisors (1308544).

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

1258256 is a wasteful number, since it uses less digits than its factorization.

1258256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166 (or 4160 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 1258256 is about 1121.7201076918. The cubic root of 1258256 is about 107.9583744479.

The spelling of 1258256 in words is "one million, two hundred fifty-eight thousand, two hundred fifty-six".