1225427 has 4 divisors (see below), whose sum is σ = 1400496. Its totient is φ = 1050360.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225427 is 7245221.

It is a happy number.

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 1225427 - 2¹⁰ = 1224403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225127) 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, 87524 + ... + 87537.

It is an arithmetic number, because the mean of its divisors is an integer number (350124).

2^1225427 is an apocalyptic number.

1225427 is a deficient number, since it is larger than the sum of its proper divisors (175069).

1225427 is an equidigital number, since it uses as much as digits as its factorization.

1225427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175068.

The product of its digits is 1120, while the sum is 23.

The square root of 1225427 is about 1106.9900631894. The cubic root of 1225427 is about 107.0111788478.

The spelling of 1225427 in words is "one million, two hundred twenty-five thousand, four hundred twenty-seven".