612812225 has 12 divisors (see below), whose sum is σ = 799881840. Its totient is φ = 464446800.

The previous prime is 612812203. The next prime is 612812227. The reversal of 612812225 is 522218216.

It is not a de Polignac number, because 612812225 - 2¹⁰ = 612811201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (612812227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644591 + ... + 645540.

It is an arithmetic number, because the mean of its divisors is an integer number (66656820).

Almost surely, 2^612812225 is an apocalyptic number.

It is an amenable number.

612812225 is a deficient number, since it is larger than the sum of its proper divisors (187069615).

612812225 is a wasteful number, since it uses less digits than its factorization.

612812225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290160 (or 1290155 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 612812225 is about 24755.0444354277. The cubic root of 612812225 is about 849.3939047180.

The spelling of 612812225 in words is "six hundred twelve million, eight hundred twelve thousand, two hundred twenty-five".