1425623 has 4 divisors (see below), whose sum is σ = 1439568. Its totient is φ = 1411680.

The previous prime is 1425607. The next prime is 1425629. The reversal of 1425623 is 3265241.

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

It is a cyclic number.

It is not a de Polignac number, because 1425623 - 2⁴ = 1425607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425629) 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, 6818 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (359892).

2^1425623 is an apocalyptic number.

1425623 is a deficient number, since it is larger than the sum of its proper divisors (13945).

1425623 is a wasteful number, since it uses less digits than its factorization.

1425623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944.

The product of its digits is 1440, while the sum is 23.

The square root of 1425623 is about 1193.9945561015. The cubic root of 1425623 is about 112.5472525780.

It can be divided in two parts, 1425 and 623, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1425623 in words is "one million, four hundred twenty-five thousand, six hundred twenty-three".