225121024536436 has 24 divisors (see below), whose sum is σ = 450827539426880. Its totient is φ = 96354976868352.

The previous prime is 225121024536427. The next prime is 225121024536439. The reversal of 225121024536436 is 634635420121522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225121024536439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5227570530 + ... + 5227613593.

Almost surely, 2^{225121024536436} is an apocalyptic number.

It is an amenable number.

225121024536436 is an abundant number, since it is smaller than the sum of its proper divisors (225706514890444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225121024536436 is a wasteful number, since it uses less digits than its factorization.

225121024536436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10455184903 (or 10455184901 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 46.

Adding to 225121024536436 its reverse (634635420121522), we get a palindrome (859756444657958).

The spelling of 225121024536436 in words is "two hundred twenty-five trillion, one hundred twenty-one billion, twenty-four million, five hundred thirty-six thousand, four hundred thirty-six".