121245425 has 24 divisors (see below), whose sum is σ = 172238976. Its totient is φ = 82938240.

The previous prime is 121245419. The next prime is 121245427. The reversal of 121245425 is 524542121.

It is not a de Polignac number, because 121245425 - 2⁴ = 121245409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121245394 and 121245403.

It is not an unprimeable number, because it can be changed into a prime (121245427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126749 + ... + 127701.

It is an arithmetic number, because the mean of its divisors is an integer number (7176624).

Almost surely, 2^121245425 is an apocalyptic number.

It is an amenable number.

121245425 is a deficient number, since it is larger than the sum of its proper divisors (50993551).

121245425 is an equidigital number, since it uses as much as digits as its factorization.

121245425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1692 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 121245425 is about 11011.1500307643. The cubic root of 121245425 is about 494.9429244126.

Adding to 121245425 its reverse (524542121), we get a palindrome (645787546).

The spelling of 121245425 in words is "one hundred twenty-one million, two hundred forty-five thousand, four hundred twenty-five".