1225667 has 4 divisors (see below), whose sum is σ = 1233936. Its totient is φ = 1217400.

The previous prime is 1225663. The next prime is 1225687. The reversal of 1225667 is 7665221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7665221 = 59 ⋅129919.

It is a cyclic number.

It is not a de Polignac number, because 1225667 - 2² = 1225663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1225663) 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, 3908 + ... + 4209.

It is an arithmetic number, because the mean of its divisors is an integer number (308484).

2^1225667 is an apocalyptic number.

1225667 is a deficient number, since it is larger than the sum of its proper divisors (8269).

1225667 is an equidigital number, since it uses as much as digits as its factorization.

1225667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268.

The product of its digits is 5040, while the sum is 29.

The square root of 1225667 is about 1107.0984599393. The cubic root of 1225667 is about 107.0181644418.

The spelling of 1225667 in words is "one million, two hundred twenty-five thousand, six hundred sixty-seven".