1220325541 has 2 divisors, whose sum is σ = 1220325542. Its totient is φ = 1220325540.

The previous prime is 1220325503. The next prime is 1220325551. The reversal of 1220325541 is 1455230221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1072824516 + 147501025 = 32754^2 + 12145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220325541 - 2¹¹ = 1220323493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220325551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610162770 + 610162771.

It is an arithmetic number, because the mean of its divisors is an integer number (610162771).

Almost surely, 2^1220325541 is an apocalyptic number.

It is an amenable number.

1220325541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220325541 is an equidigital number, since it uses as much as digits as its factorization.

1220325541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1220325541 is about 34933.1581881742. The cubic root of 1220325541 is about 1068.6247627450.

Adding to 1220325541 its reverse (1455230221), we get a palindrome (2675555762).

The spelling of 1220325541 in words is "one billion, two hundred twenty million, three hundred twenty-five thousand, five hundred forty-one".