1255623 has 12 divisors (see below), whose sum is σ = 1717800. Its totient is φ = 815776.

The previous prime is 1255619. The next prime is 1255633. The reversal of 1255623 is 3265521.

It is not a de Polignac number, because 1255623 - 2² = 1255619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255593 and 1255602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8353 + ... + 8501.

It is an arithmetic number, because the mean of its divisors is an integer number (143150).

2^1255623 is an apocalyptic number.

1255623 is a deficient number, since it is larger than the sum of its proper divisors (462177).

1255623 is an equidigital number, since it uses as much as digits as its factorization.

1255623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 205 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 1255623 is about 1120.5458491289. The cubic root of 1255623 is about 107.8830180537.

The spelling of 1255623 in words is "one million, two hundred fifty-five thousand, six hundred twenty-three".