121464145425 has 48 divisors (see below), whose sum is σ = 229658158080. Its totient is φ = 55490475840.

The previous prime is 121464145399. The next prime is 121464145501. The reversal of 121464145425 is 524541464121.

It is not a de Polignac number, because 121464145425 - 2¹¹ = 121464143377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 744274 + ... + 892676.

It is an arithmetic number, because the mean of its divisors is an integer number (4784544960).

Almost surely, 2^121464145425 is an apocalyptic number.

121464145425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121464145425 is a deficient number, since it is larger than the sum of its proper divisors (108194012655).

121464145425 is a wasteful number, since it uses less digits than its factorization.

121464145425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149982 (or 149977 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The spelling of 121464145425 in words is "one hundred twenty-one billion, four hundred sixty-four million, one hundred forty-five thousand, four hundred twenty-five".