1255845 has 16 divisors (see below), whose sum is σ = 2079360. Its totient is φ = 646464.

The previous prime is 1255831. The next prime is 1255847. The reversal of 1255845 is 5485521.

It is not a de Polignac number, because 1255845 - 2⁴ = 1255829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (129960).

2^1255845 is an apocalyptic number.

1255845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255845 is a deficient number, since it is larger than the sum of its proper divisors (823515).

1255845 is a wasteful number, since it uses less digits than its factorization.

1255845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924.

The product of its digits is 8000, while the sum is 30.

The square root of 1255845 is about 1120.6449036158. The cubic root of 1255845 is about 107.8893757525.

The spelling of 1255845 in words is "one million, two hundred fifty-five thousand, eight hundred forty-five".