202225561 has 2 divisors, whose sum is σ = 202225562. Its totient is φ = 202225560.

The previous prime is 202225501. The next prime is 202225567. The reversal of 202225561 is 165522202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202208400 + 17161 = 14220^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 202225561 - 2¹³ = 202217369 is a prime.

It is not a weakly prime, because it can be changed into another prime (202225567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101112780 + 101112781.

It is an arithmetic number, because the mean of its divisors is an integer number (101112781).

Almost surely, 2^202225561 is an apocalyptic number.

It is an amenable number.

202225561 is a deficient number, since it is larger than the sum of its proper divisors (1).

202225561 is an equidigital number, since it uses as much as digits as its factorization.

202225561 is an odious number, because the sum of its binary digits is odd.

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

The square root of 202225561 is about 14220.6033978872. The cubic root of 202225561 is about 586.9647441791.

Adding to 202225561 its reverse (165522202), we get a palindrome (367747763).

The spelling of 202225561 in words is "two hundred two million, two hundred twenty-five thousand, five hundred sixty-one".