121425355435525 has 12 divisors (see below), whose sum is σ = 151139940522912. Its totient is φ = 96770929649840.

The previous prime is 121425355435519. The next prime is 121425355435543. The reversal of 121425355435525 is 525534553524121.

It is not a de Polignac number, because 121425355435525 - 2²⁵ = 121425321881093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9233860759 + ... + 9233873908.

It is an arithmetic number, because the mean of its divisors is an integer number (12594995043576).

Almost surely, 2^{121425355435525} is an apocalyptic number.

It is an amenable number.

121425355435525 is a deficient number, since it is larger than the sum of its proper divisors (29714585087387).

121425355435525 is a wasteful number, since it uses less digits than its factorization.

121425355435525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18467734940 (or 18467734935 counting only the distinct ones).

The product of its digits is 18000000, while the sum is 52.

The spelling of 121425355435525 in words is "one hundred twenty-one trillion, four hundred twenty-five billion, three hundred fifty-five million, four hundred thirty-five thousand, five hundred twenty-five".