1255864 has 16 divisors (see below), whose sum is σ = 2370600. Its totient is φ = 623712.

The previous prime is 1255861. The next prime is 1255907. The reversal of 1255864 is 4685521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994 + ... + 1870.

2^1255864 is an apocalyptic number.

It is an amenable number.

1255864 is a deficient number, since it is larger than the sum of its proper divisors (1114736).

1255864 is a wasteful number, since it uses less digits than its factorization.

1255864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1058 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1255864 is about 1120.6533808453. The cubic root of 1255864 is about 107.8899198451.

The spelling of 1255864 in words is "one million, two hundred fifty-five thousand, eight hundred sixty-four".