121725663 has 8 divisors (see below), whose sum is σ = 162442368. Its totient is φ = 81079704.

The previous prime is 121725619. The next prime is 121725691. The reversal of 121725663 is 366527121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121725663 - 2⁶ = 121725599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121723663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13531 + ... + 20652.

It is an arithmetic number, because the mean of its divisors is an integer number (20305296).

Almost surely, 2^121725663 is an apocalyptic number.

121725663 is a deficient number, since it is larger than the sum of its proper divisors (40716705).

121725663 is a wasteful number, since it uses less digits than its factorization.

121725663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35373.

The product of its digits is 15120, while the sum is 33.

The square root of 121725663 is about 11032.9353755018. The cubic root of 121725663 is about 495.5955325920.

The spelling of 121725663 in words is "one hundred twenty-one million, seven hundred twenty-five thousand, six hundred sixty-three".