1255618 has 16 divisors (see below), whose sum is σ = 2318400. Its totient is φ = 496656.

The previous prime is 1255609. The next prime is 1255619. The reversal of 1255618 is 8165521.

It is not an unprimeable number, because it can be changed into a prime (1255619) 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, 3268 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^1255618 is an apocalyptic number.

1255618 is a deficient number, since it is larger than the sum of its proper divisors (1062782).

1255618 is a wasteful number, since it uses less digits than its factorization.

1255618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6921.

The product of its digits is 2400, while the sum is 28.

The square root of 1255618 is about 1120.5436180712. The cubic root of 1255618 is about 107.8828748536.

Subtracting 1255618 from its reverse (8165521), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1255618 in words is "one million, two hundred fifty-five thousand, six hundred eighteen".