202501222561 has 16 divisors (see below), whose sum is σ = 223122631680. Its totient is φ = 182249597520.

The previous prime is 202501222457. The next prime is 202501222571. The reversal of 202501222561 is 165222105202.

It is a cyclic number.

It is not a de Polignac number, because 202501222561 - 2⁷ = 202501222433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202501222571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3984436 + ... + 4034938.

It is an arithmetic number, because the mean of its divisors is an integer number (13945164480).

Almost surely, 2^202501222561 is an apocalyptic number.

It is an amenable number.

202501222561 is a deficient number, since it is larger than the sum of its proper divisors (20621409119).

202501222561 is a wasteful number, since it uses less digits than its factorization.

202501222561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54156.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 202501222561 its reverse (165222105202), we get a palindrome (367723327763).

The spelling of 202501222561 in words is "two hundred two billion, five hundred one million, two hundred twenty-two thousand, five hundred sixty-one".