1255245 has 16 divisors (see below), whose sum is σ = 2040000. Its totient is φ = 658944.

The previous prime is 1255237. The next prime is 1255249. The reversal of 1255245 is 5425521.

It is a happy number.

It is not a de Polignac number, because 1255245 - 2³ = 1255237 is a prime.

It is a Curzon number.

1255245 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255249) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 381 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (127500).

2^1255245 is an apocalyptic number.

1255245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255245 is a deficient number, since it is larger than the sum of its proper divisors (784755).

1255245 is a wasteful number, since it uses less digits than its factorization.

1255245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 2000, while the sum is 24.

The square root of 1255245 is about 1120.3771686356. The cubic root of 1255245 is about 107.8721910582.

The spelling of 1255245 in words is "one million, two hundred fifty-five thousand, two hundred forty-five".