612243600225 has 48 divisors (see below), whose sum is σ = 1073768774400. Its totient is φ = 306753868800.

The previous prime is 612243600211. The next prime is 612243600253. The reversal of 612243600225 is 522006342216.

It is a happy number.

It is not a de Polignac number, because 612243600225 - 2⁶ = 612243600161 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245976 + ... + 1133574.

It is an arithmetic number, because the mean of its divisors is an integer number (22370182800).

Almost surely, 2^612243600225 is an apocalyptic number.

It is an amenable number.

612243600225 is a deficient number, since it is larger than the sum of its proper divisors (461525174175).

612243600225 is a wasteful number, since it uses less digits than its factorization.

612243600225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888170 (or 888165 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 612243600225 in words is "six hundred twelve billion, two hundred forty-three million, six hundred thousand, two hundred twenty-five".