212454025393 has 2 divisors, whose sum is σ = 212454025394. Its totient is φ = 212454025392.

The previous prime is 212454025331. The next prime is 212454025403. The reversal of 212454025393 is 393520454212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112324181904 + 100129843489 = 335148^2 + 316433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212454025393 is a prime.

It is not a weakly prime, because it can be changed into another prime (212454025193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106227012696 + 106227012697.

It is an arithmetic number, because the mean of its divisors is an integer number (106227012697).

Almost surely, 2^212454025393 is an apocalyptic number.

It is an amenable number.

212454025393 is a deficient number, since it is larger than the sum of its proper divisors (1).

212454025393 is an equidigital number, since it uses as much as digits as its factorization.

212454025393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 212454025393 in words is "two hundred twelve billion, four hundred fifty-four million, twenty-five thousand, three hundred ninety-three".