121457625 has 32 divisors (see below), whose sum is σ = 202849920. Its totient is φ = 64539200.

The previous prime is 121457603. The next prime is 121457627. The reversal of 121457625 is 526754121.

It is not a de Polignac number, because 121457625 - 2⁶ = 121457561 is a prime.

Its product of digits (16800) is a multiple of the sum of its prime divisors (1200).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121457627) 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 31 ways as a sum of consecutive naturals, for example, 156739 + ... + 157511.

It is an arithmetic number, because the mean of its divisors is an integer number (6339060).

Almost surely, 2^121457625 is an apocalyptic number.

121457625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121457625 is a deficient number, since it is larger than the sum of its proper divisors (81392295).

121457625 is an equidigital number, since it uses as much as digits as its factorization.

121457625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1200 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 121457625 is about 11020.7815058643. The cubic root of 121457625 is about 495.2315007348.

The spelling of 121457625 in words is "one hundred twenty-one million, four hundred fifty-seven thousand, six hundred twenty-five".