252220245427 has 2 divisors, whose sum is σ = 252220245428. Its totient is φ = 252220245426.

The previous prime is 252220245397. The next prime is 252220245443. The reversal of 252220245427 is 724542022252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252220245427 is a prime.

It is a super-2 number, since 2×252220245427² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252220249427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126110122713 + 126110122714.

It is an arithmetic number, because the mean of its divisors is an integer number (126110122714).

Almost surely, 2^252220245427 is an apocalyptic number.

252220245427 is a deficient number, since it is larger than the sum of its proper divisors (1).

252220245427 is an equidigital number, since it uses as much as digits as its factorization.

252220245427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 37.

Adding to 252220245427 its reverse (724542022252), we get a palindrome (976762267679).

The spelling of 252220245427 in words is "two hundred fifty-two billion, two hundred twenty million, two hundred forty-five thousand, four hundred twenty-seven".