121746515425 has 12 divisors (see below), whose sum is σ = 150973686396. Its totient is φ = 97392046400.

The previous prime is 121746515417. The next prime is 121746515483. The reversal of 121746515425 is 524515647121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5958759249 + 115787756176 = 77193^2 + 340276^2 .

It is not a de Polignac number, because 121746515425 - 2³ = 121746515417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 393015 + ... + 630835.

It is an arithmetic number, because the mean of its divisors is an integer number (12581140533).

Almost surely, 2^121746515425 is an apocalyptic number.

It is an amenable number.

121746515425 is a deficient number, since it is larger than the sum of its proper divisors (29227170971).

121746515425 is a wasteful number, since it uses less digits than its factorization.

121746515425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258308 (or 258303 counting only the distinct ones).

The product of its digits is 336000, while the sum is 43.

The spelling of 121746515425 in words is "one hundred twenty-one billion, seven hundred forty-six million, five hundred fifteen thousand, four hundred twenty-five".