121246725 has 12 divisors (see below), whose sum is σ = 200461376. Its totient is φ = 64664880.

The previous prime is 121246721. The next prime is 121246739. The reversal of 121246725 is 527642121.

It is not a de Polignac number, because 121246725 - 2² = 121246721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121246692 and 121246701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121246721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 808237 + ... + 808386.

Almost surely, 2^121246725 is an apocalyptic number.

121246725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121246725 is a deficient number, since it is larger than the sum of its proper divisors (79214651).

121246725 is a wasteful number, since it uses less digits than its factorization.

121246725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616636 (or 1616631 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 121246725 is about 11011.2090616789. The cubic root of 121246725 is about 494.9446933412.

Adding to 121246725 its reverse (527642121), we get a palindrome (648888846).

The spelling of 121246725 in words is "one hundred twenty-one million, two hundred forty-six thousand, seven hundred twenty-five".