1252605 has 16 divisors (see below), whose sum is σ = 2024640. Its totient is φ = 661248.

The previous prime is 1252579. The next prime is 1252609. The reversal of 1252605 is 5062521.

It is not a de Polignac number, because 1252605 - 2¹⁰ = 1251581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 2064.

It is an arithmetic number, because the mean of its divisors is an integer number (126540).

2^1252605 is an apocalyptic number.

1252605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252605 is a deficient number, since it is larger than the sum of its proper divisors (772035).

1252605 is a wasteful number, since it uses less digits than its factorization.

1252605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1252605 is about 1119.1983738373. The cubic root of 1252605 is about 107.7965132775.

The spelling of 1252605 in words is "one million, two hundred fifty-two thousand, six hundred five".