1425405 has 8 divisors (see below), whose sum is σ = 2280672. Its totient is φ = 760208.

The previous prime is 1425371. The next prime is 1425427. The reversal of 1425405 is 5045241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425405 - 2¹² = 1421309 is a prime.

It is a Curzon number.

1425405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47499 + ... + 47528.

It is an arithmetic number, because the mean of its divisors is an integer number (285084).

2^1425405 is an apocalyptic number.

1425405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1425405 is a deficient number, since it is larger than the sum of its proper divisors (855267).

1425405 is an equidigital number, since it uses as much as digits as its factorization.

1425405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95035.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1425405 is about 1193.9032624128. The cubic root of 1425405 is about 112.5415155420.

It can be divided in two parts, 1425 and 405, that added together give a triangular number (1830 = T₆₀).

The spelling of 1425405 in words is "one million, four hundred twenty-five thousand, four hundred five".