121688325 has 84 divisors (see below), whose sum is σ = 247210368. Its totient is φ = 58903200.

The previous prime is 121688309. The next prime is 121688327. The reversal of 121688325 is 523886121.

It is a happy number.

It is not a de Polignac number, because 121688325 - 2⁴ = 121688309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121688325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121688327) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 200172 + ... + 200778.

Almost surely, 2^121688325 is an apocalyptic number.

121688325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121688325 is an abundant number, since it is smaller than the sum of its proper divisors (125522043).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121688325 is an equidigital number, since it uses as much as digits as its factorization.

121688325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 626 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 121688325 is about 11031.2431303095. The cubic root of 121688325 is about 495.5448545950.

The spelling of 121688325 in words is "one hundred twenty-one million, six hundred eighty-eight thousand, three hundred twenty-five".