1425505 has 4 divisors (see below), whose sum is σ = 1710612. Its totient is φ = 1140400.

The previous prime is 1425503. The next prime is 1425511. The reversal of 1425505 is 5055241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 652864 + 772641 = 808^2 + 879^2 .

It is not a de Polignac number, because 1425505 - 2¹ = 1425503 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142546 + ... + 142555.

It is an arithmetic number, because the mean of its divisors is an integer number (427653).

2^1425505 is an apocalyptic number.

It is an amenable number.

1425505 is a deficient number, since it is larger than the sum of its proper divisors (285107).

1425505 is an equidigital number, since it uses as much as digits as its factorization.

1425505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285106.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1425505 is about 1193.9451411183. The cubic root of 1425505 is about 112.5441472825.

The spelling of 1425505 in words is "one million, four hundred twenty-five thousand, five hundred five".