1220225541 has 16 divisors (see below), whose sum is σ = 1739734848. Its totient is φ = 758048000.

The previous prime is 1220225537. The next prime is 1220225593. The reversal of 1220225541 is 1455220221.

It is a cyclic number.

It is not a de Polignac number, because 1220225541 - 2² = 1220225537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220229541) 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 15 ways as a sum of consecutive naturals, for example, 113295 + ... + 123596.

It is an arithmetic number, because the mean of its divisors is an integer number (108733428).

Almost surely, 2^1220225541 is an apocalyptic number.

It is an amenable number.

1220225541 is a deficient number, since it is larger than the sum of its proper divisors (519509307).

1220225541 is a wasteful number, since it uses less digits than its factorization.

1220225541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237012.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1220225541 is about 34931.7268539647. The cubic root of 1220225541 is about 1068.5955723386.

Adding to 1220225541 its reverse (1455220221), we get a palindrome (2675445762).

The spelling of 1220225541 in words is "one billion, two hundred twenty million, two hundred twenty-five thousand, five hundred forty-one".