205152025291 has 2 divisors, whose sum is σ = 205152025292. Its totient is φ = 205152025290.

The previous prime is 205152025259. The next prime is 205152025307. The reversal of 205152025291 is 192520251502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205152025291 - 2⁵ = 205152025259 is a prime.

It is not a weakly prime, because it can be changed into another prime (205152020291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102576012645 + 102576012646.

It is an arithmetic number, because the mean of its divisors is an integer number (102576012646).

Almost surely, 2^205152025291 is an apocalyptic number.

205152025291 is a deficient number, since it is larger than the sum of its proper divisors (1).

205152025291 is an equidigital number, since it uses as much as digits as its factorization.

205152025291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 205152025291 its reverse (192520251502), we get a palindrome (397672276793).

The spelling of 205152025291 in words is "two hundred five billion, one hundred fifty-two million, twenty-five thousand, two hundred ninety-one".