252021260641 has 2 divisors, whose sum is σ = 252021260642. Its totient is φ = 252021260640.

The previous prime is 252021260633. The next prime is 252021260653. The reversal of 252021260641 is 146062120252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251361849600 + 659411041 = 501360^2 + 25679^2 .

It is a cyclic number.

It is not a de Polignac number, because 252021260641 - 2³ = 252021260633 is a prime.

It is not a weakly prime, because it can be changed into another prime (252021260611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126010630320 + 126010630321.

It is an arithmetic number, because the mean of its divisors is an integer number (126010630321).

Almost surely, 2^252021260641 is an apocalyptic number.

It is an amenable number.

252021260641 is a deficient number, since it is larger than the sum of its proper divisors (1).

252021260641 is an equidigital number, since it uses as much as digits as its factorization.

252021260641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 252021260641 its reverse (146062120252), we get a palindrome (398083380893).

The spelling of 252021260641 in words is "two hundred fifty-two billion, twenty-one million, two hundred sixty thousand, six hundred forty-one".