121353925 has 48 divisors (see below), whose sum is σ = 189523584. Its totient is φ = 75504000.

The previous prime is 121353917. The next prime is 121353929. The reversal of 121353925 is 529353121.

It is not a de Polignac number, because 121353925 - 2³ = 121353917 is a prime.

It is a super-2 number, since 2×121353925² = 29453550225811250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121353929) 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 47 ways as a sum of consecutive naturals, for example, 232665 + ... + 233185.

It is an arithmetic number, because the mean of its divisors is an integer number (3948408).

Almost surely, 2^121353925 is an apocalyptic number.

It is an amenable number.

121353925 is a deficient number, since it is larger than the sum of its proper divisors (68169659).

121353925 is an equidigital number, since it uses as much as digits as its factorization.

121353925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 544 counting only the distinct ones).

The product of its digits is 8100, while the sum is 31.

The square root of 121353925 is about 11016.0757531891. The cubic root of 121353925 is about 495.0905184257.

The spelling of 121353925 in words is "one hundred twenty-one million, three hundred fifty-three thousand, nine hundred twenty-five".