121125044425 has 72 divisors (see below), whose sum is σ = 189506273600. Its totient is φ = 75173788800.

The previous prime is 121125044423. The next prime is 121125044473. The reversal of 121125044425 is 524440521121.

It is not a de Polignac number, because 121125044425 - 2¹ = 121125044423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121125044423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4836586 + ... + 4861564.

Almost surely, 2^121125044425 is an apocalyptic number.

It is an amenable number.

121125044425 is a deficient number, since it is larger than the sum of its proper divisors (68381229175).

121125044425 is a wasteful number, since it uses less digits than its factorization.

121125044425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25247 (or 25231 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 121125044425 its reverse (524440521121), we get a palindrome (645565565546).

The spelling of 121125044425 in words is "one hundred twenty-one billion, one hundred twenty-five million, forty-four thousand, four hundred twenty-five".