1225421341 has 4 divisors (see below), whose sum is σ = 1225660572. Its totient is φ = 1225182112.

The previous prime is 1225421339. The next prime is 1225421369. The reversal of 1225421341 is 1431245221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 491553241 + 733868100 = 22171^2 + 27090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225421341 - 2¹ = 1225421339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225421311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111760 + ... + 122233.

It is an arithmetic number, because the mean of its divisors is an integer number (306415143).

Almost surely, 2^1225421341 is an apocalyptic number.

It is an amenable number.

1225421341 is a deficient number, since it is larger than the sum of its proper divisors (239231).

1225421341 is an equidigital number, since it uses as much as digits as its factorization.

1225421341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239230.

The product of its digits is 1920, while the sum is 25.

The square root of 1225421341 is about 35006.0186396568. The cubic root of 1225421341 is about 1070.1101412228.

Adding to 1225421341 its reverse (1431245221), we get a palindrome (2656666562).

The spelling of 1225421341 in words is "one billion, two hundred twenty-five million, four hundred twenty-one thousand, three hundred forty-one".