121963625 has 16 divisors (see below), whose sum is σ = 173956224. Its totient is φ = 83631600.

The previous prime is 121963591. The next prime is 121963649. The reversal of 121963625 is 526369121.

It is not a de Polignac number, because 121963625 - 2¹⁰ = 121962601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68819 + ... + 70568.

It is an arithmetic number, because the mean of its divisors is an integer number (10872264).

Almost surely, 2^121963625 is an apocalyptic number.

It is an amenable number.

121963625 is a deficient number, since it is larger than the sum of its proper divisors (51992599).

121963625 is an equidigital number, since it uses as much as digits as its factorization.

121963625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139409 (or 139399 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 121963625 is about 11043.7142755506. The cubic root of 121963625 is about 495.9182696260.

The spelling of 121963625 in words is "one hundred twenty-one million, nine hundred sixty-three thousand, six hundred twenty-five".