1253005 has 16 divisors (see below), whose sum is σ = 1666224. Its totient is φ = 898560.

The previous prime is 1252997. The next prime is 1253011. The reversal of 1253005 is 5003521.

It can be written as a sum of positive squares in 8 ways, for example, as 27556 + 1225449 = 166^2 + 1107^2 .

It is not a de Polignac number, because 1253005 - 2³ = 1252997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2145 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (104139).

2^1253005 is an apocalyptic number.

It is an amenable number.

1253005 is a deficient number, since it is larger than the sum of its proper divisors (413219).

1253005 is a wasteful number, since it uses less digits than its factorization.

1253005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1253005 is about 1119.3770589037. The cubic root of 1253005 is about 107.8079864385.

Adding to 1253005 its reverse (5003521), we get a palindrome (6256526).

The spelling of 1253005 in words is "one million, two hundred fifty-three thousand, five".