225216126001 has 2 divisors, whose sum is σ = 225216126002. Its totient is φ = 225216126000.

The previous prime is 225216125989. The next prime is 225216126007. The reversal of 225216126001 is 100621612522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139980739600 + 85235386401 = 374140^2 + 291951^2 .

It is a cyclic number.

It is not a de Polignac number, because 225216126001 - 2⁷ = 225216125873 is a prime.

It is not a weakly prime, because it can be changed into another prime (225216126007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112608063000 + 112608063001.

It is an arithmetic number, because the mean of its divisors is an integer number (112608063001).

Almost surely, 2^225216126001 is an apocalyptic number.

It is an amenable number.

225216126001 is a deficient number, since it is larger than the sum of its proper divisors (1).

225216126001 is an equidigital number, since it uses as much as digits as its factorization.

225216126001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 225216126001 its reverse (100621612522), we get a palindrome (325837738523).

The spelling of 225216126001 in words is "two hundred twenty-five billion, two hundred sixteen million, one hundred twenty-six thousand, one".