225121024536437 has 16 divisors (see below), whose sum is σ = 238424250677760. Its totient is φ = 212125697878512.

The previous prime is 225121024536427. The next prime is 225121024536439. The reversal of 225121024536437 is 734635420121522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 225121024536437 - 2⁴⁴ = 207528838492021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225121024536391 and 225121024536400.

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 pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169259987 + ... + 170584832.

It is an arithmetic number, because the mean of its divisors is an integer number (14901515667360).

Almost surely, 2^{225121024536437} is an apocalyptic number.

It is an amenable number.

225121024536437 is a deficient number, since it is larger than the sum of its proper divisors (13303226141323).

225121024536437 is a wasteful number, since it uses less digits than its factorization.

225121024536437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339845272.

The product of its (nonzero) digits is 2419200, while the sum is 47.

Adding to 225121024536437 its reverse (734635420121522), we get a palindrome (959756444657959).

The spelling of 225121024536437 in words is "two hundred twenty-five trillion, one hundred twenty-one billion, twenty-four million, five hundred thirty-six thousand, four hundred thirty-seven".