1255400 has 24 divisors (see below), whose sum is σ = 2919270. Its totient is φ = 502080.

The previous prime is 1255393. The next prime is 1255421. The reversal of 1255400 is 45521.

It can be written as a sum of positive squares in 3 ways, for example, as 1196836 + 58564 = 1094^2 + 242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2939 + ... + 3338.

2^1255400 is an apocalyptic number.

1255400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255400 is an abundant number, since it is smaller than the sum of its proper divisors (1663870).

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

1255400 is a wasteful number, since it uses less digits than its factorization.

1255400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293 (or 6284 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1255400 is about 1120.4463396343. The cubic root of 1255400 is about 107.8766309620.

The spelling of 1255400 in words is "one million, two hundred fifty-five thousand, four hundred".