212425669 has 2 divisors, whose sum is σ = 212425670. Its totient is φ = 212425668.

The previous prime is 212425657. The next prime is 212425687. The reversal of 212425669 is 966524212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115304644 + 97121025 = 10738^2 + 9855^2 .

It is a cyclic number.

It is not a de Polignac number, because 212425669 - 2⁵ = 212425637 is a prime.

It is a super-2 number, since 2×212425669² = 90249329700195122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212425699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106212834 + 106212835.

It is an arithmetic number, because the mean of its divisors is an integer number (106212835).

Almost surely, 2^212425669 is an apocalyptic number.

It is an amenable number.

212425669 is a deficient number, since it is larger than the sum of its proper divisors (1).

212425669 is an equidigital number, since it uses as much as digits as its factorization.

212425669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 212425669 is about 14574.8299818557. The cubic root of 212425669 is about 596.6720091834.

The spelling of 212425669 in words is "two hundred twelve million, four hundred twenty-five thousand, six hundred sixty-nine".