1225540324 has 24 divisors (see below), whose sum is σ = 2171473920. Its totient is φ = 605136576.

The previous prime is 1225540249. The next prime is 1225540331. The reversal of 1225540324 is 4230455221.

It is a junction number, because it is equal to n+sod(n) for n = 1225540292 and 1225540301.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 385389 + ... + 388555.

It is an arithmetic number, because the mean of its divisors is an integer number (90478080).

Almost surely, 2^1225540324 is an apocalyptic number.

It is an amenable number.

1225540324 is a deficient number, since it is larger than the sum of its proper divisors (945933596).

1225540324 is a wasteful number, since it uses less digits than its factorization.

1225540324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347 (or 4345 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1225540324 is about 35007.7180633071. The cubic root of 1225540324 is about 1070.1447744247.

Adding to 1225540324 its reverse (4230455221), we get a palindrome (5455995545).

The spelling of 1225540324 in words is "one billion, two hundred twenty-five million, five hundred forty thousand, three hundred twenty-four".