1225426 has 4 divisors (see below), whose sum is σ = 1838142. Its totient is φ = 612712.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225426 is 6245221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6245221 = 1097 ⋅5693.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 13225 = 1101^2 + 115^2 .

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 junction number, because it is equal to n+sod(n) for n = 1225397 and 1225406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306355 + ... + 306358.

2^1225426 is an apocalyptic number.

1225426 is a deficient number, since it is larger than the sum of its proper divisors (612716).

1225426 is an equidigital number, since it uses as much as digits as its factorization.

1225426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612715.

The product of its digits is 960, while the sum is 22.

The square root of 1225426 is about 1106.9896115140. The cubic root of 1225426 is about 107.0111497392.

The spelling of 1225426 in words is "one million, two hundred twenty-five thousand, four hundred twenty-six".