1222404125 has 16 divisors (see below), whose sum is σ = 1615302000. Its totient is φ = 920396800.

The previous prime is 1222404101. The next prime is 1222404133. The reversal of 1222404125 is 5214042221.

It can be written as a sum of positive squares in 8 ways, for example, as 426092164 + 796311961 = 20642^2 + 28219^2 .

It is not a de Polignac number, because 1222404125 - 2⁸ = 1222403869 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222404125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285500 + ... + 289749.

It is an arithmetic number, because the mean of its divisors is an integer number (100956375).

Almost surely, 2^1222404125 is an apocalyptic number.

It is an amenable number.

1222404125 is a deficient number, since it is larger than the sum of its proper divisors (392897875).

1222404125 is an equidigital number, since it uses as much as digits as its factorization.

1222404125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575281 (or 575271 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1222404125 is about 34962.8964046173. The cubic root of 1222404125 is about 1069.2311491315.

Adding to 1222404125 its reverse (5214042221), we get a palindrome (6436446346).

The spelling of 1222404125 in words is "one billion, two hundred twenty-two million, four hundred four thousand, one hundred twenty-five".