1255278 has 8 divisors (see below), whose sum is σ = 2510568. Its totient is φ = 418424.

The previous prime is 1255259. The next prime is 1255279. The reversal of 1255278 is 8725521.

It is a sphenic number, since it is the product of 3 distinct primes.

1255278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255279) 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, 104601 + ... + 104612.

It is an arithmetic number, because the mean of its divisors is an integer number (313821).

2^1255278 is an apocalyptic number.

1255278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1255278 is a wasteful number, since it uses less digits than its factorization.

1255278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209218.

The product of its digits is 5600, while the sum is 30.

The square root of 1255278 is about 1120.3918957222. The cubic root of 1255278 is about 107.8731363586.

The spelling of 1255278 in words is "one million, two hundred fifty-five thousand, two hundred seventy-eight".