1252569 has 4 divisors (see below), whose sum is σ = 1670096. Its totient is φ = 835044.

The previous prime is 1252523. The next prime is 1252579. The reversal of 1252569 is 9652521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1252569 - 2⁹ = 1252057 is a prime.

It is a super-2 number, since 2×1252569² = 3137858199522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252579) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 208759 + ... + 208764.

It is an arithmetic number, because the mean of its divisors is an integer number (417524).

2^1252569 is an apocalyptic number.

It is an amenable number.

1252569 is a deficient number, since it is larger than the sum of its proper divisors (417527).

1252569 is an equidigital number, since it uses as much as digits as its factorization.

1252569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417526.

The product of its digits is 5400, while the sum is 30.

The square root of 1252569 is about 1119.1822907820. The cubic root of 1252569 is about 107.7954805733.

The spelling of 1252569 in words is "one million, two hundred fifty-two thousand, five hundred sixty-nine".