1222425447 has 4 divisors (see below), whose sum is σ = 1629900600. Its totient is φ = 814950296.

The previous prime is 1222425437. The next prime is 1222425461. The reversal of 1222425447 is 7445242221.

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 1222425447 - 2⁴ = 1222425431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222425427) 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, 203737572 + ... + 203737577.

It is an arithmetic number, because the mean of its divisors is an integer number (407475150).

Almost surely, 2^1222425447 is an apocalyptic number.

1222425447 is a deficient number, since it is larger than the sum of its proper divisors (407475153).

1222425447 is an equidigital number, since it uses as much as digits as its factorization.

1222425447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407475152.

The product of its digits is 35840, while the sum is 33.

The square root of 1222425447 is about 34963.2013265376. The cubic root of 1222425447 is about 1069.2373658464.

Adding to 1222425447 its reverse (7445242221), we get a palindrome (8667667668).

The spelling of 1222425447 in words is "one billion, two hundred twenty-two million, four hundred twenty-five thousand, four hundred forty-seven".