212625407 has 2 divisors, whose sum is σ = 212625408. Its totient is φ = 212625406.

The previous prime is 212625389. The next prime is 212625481. The reversal of 212625407 is 704526212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212625407 - 2²⁰ = 211576831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212625407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212627407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106312703 + 106312704.

It is an arithmetic number, because the mean of its divisors is an integer number (106312704).

Almost surely, 2^212625407 is an apocalyptic number.

212625407 is a deficient number, since it is larger than the sum of its proper divisors (1).

212625407 is an equidigital number, since it uses as much as digits as its factorization.

212625407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 212625407 is about 14581.6805272918. The cubic root of 212625407 is about 596.8589620134.

The spelling of 212625407 in words is "two hundred twelve million, six hundred twenty-five thousand, four hundred seven".