121896825925 has 216 divisors, whose sum is σ = 199975772160. Its totient is φ = 73314662400.

The previous prime is 121896825901. The next prime is 121896826019. The reversal of 121896825925 is 529528698121.

It is not a de Polignac number, because 121896825925 - 2⁵ = 121896825893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121896825925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 318268284 + ... + 318268666.

It is an arithmetic number, because the mean of its divisors is an integer number (925813760).

Almost surely, 2^121896825925 is an apocalyptic number.

It is an amenable number.

121896825925 is a deficient number, since it is larger than the sum of its proper divisors (78078946235).

121896825925 is a wasteful number, since it uses less digits than its factorization.

121896825925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 472 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 58.

The spelling of 121896825925 in words is "one hundred twenty-one billion, eight hundred ninety-six million, eight hundred twenty-five thousand, nine hundred twenty-five".