1255945 has 8 divisors (see below), whose sum is σ = 1514880. Its totient is φ = 999600.

The previous prime is 1255939. The next prime is 1255949. The reversal of 1255945 is 5495521.

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

It is not a de Polignac number, because 1255945 - 2⁵ = 1255913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (189360).

2^1255945 is an apocalyptic number.

It is an amenable number.

1255945 is a deficient number, since it is larger than the sum of its proper divisors (258935).

1255945 is a wasteful number, since it uses less digits than its factorization.

1255945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 9000, while the sum is 31.

The square root of 1255945 is about 1120.6895198939. The cubic root of 1255945 is about 107.8922393360.

The spelling of 1255945 in words is "one million, two hundred fifty-five thousand, nine hundred forty-five".