1317625 has 16 divisors (see below), whose sum is σ = 1677312. Its totient is φ = 1033200.

The previous prime is 1317599. The next prime is 1317629. The reversal of 1317625 is 5267131.

It is not a de Polignac number, because 1317625 - 2¹⁹ = 793337 is a prime.

It is a super-2 number, since 2×1317625² = 3472271281250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1317625.

It is not an unprimeable number, because it can be changed into a prime (1317629) 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 15 ways as a sum of consecutive naturals, for example, 10312 + ... + 10438.

It is an arithmetic number, because the mean of its divisors is an integer number (104832).

2^1317625 is an apocalyptic number.

It is an amenable number.

1317625 is a deficient number, since it is larger than the sum of its proper divisors (359687).

1317625 is an equidigital number, since it uses as much as digits as its factorization.

1317625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1317625 is about 1147.8784778887. The cubic root of 1317625 is about 109.6303015742.

The spelling of 1317625 in words is "one million, three hundred seventeen thousand, six hundred twenty-five".