1255505 has 8 divisors (see below), whose sum is σ = 1513512. Its totient is φ = 999808.

The previous prime is 1255477. The next prime is 1255519. The reversal of 1255505 is 5055521.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 543169 = 844^2 + 737^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1255505 - 2⁸ = 1255249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 1893.

It is an arithmetic number, because the mean of its divisors is an integer number (189189).

2^1255505 is an apocalyptic number.

It is an amenable number.

1255505 is a deficient number, since it is larger than the sum of its proper divisors (258007).

1255505 is an equidigital number, since it uses as much as digits as its factorization.

1255505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 1255505 is about 1120.4931949816. The cubic root of 1255505 is about 107.8796384312.

The spelling of 1255505 in words is "one million, two hundred fifty-five thousand, five hundred five".