1225423 has 4 divisors (see below), whose sum is σ = 1235200. Its totient is φ = 1215648.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225423 is 3245221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225423 is a prime.

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 1225423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225493) 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, 4698 + ... + 4951.

It is an arithmetic number, because the mean of its divisors is an integer number (308800).

2^1225423 is an apocalyptic number.

1225423 is a deficient number, since it is larger than the sum of its proper divisors (9777).

1225423 is an equidigital number, since it uses as much as digits as its factorization.

1225423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776.

The product of its digits is 480, while the sum is 19.

The square root of 1225423 is about 1106.9882564869. The cubic root of 1225423 is about 107.0110624135.

The spelling of 1225423 in words is "one million, two hundred twenty-five thousand, four hundred twenty-three".