252777502489 has 2 divisors, whose sum is σ = 252777502490. Its totient is φ = 252777502488.

The previous prime is 252777502477. The next prime is 252777502493. The reversal of 252777502489 is 984205777252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230671760089 + 22105742400 = 480283^2 + 148680^2 .

It is a cyclic number.

It is not a de Polignac number, because 252777502489 - 2²³ = 252769113881 is a prime.

It is not a weakly prime, because it can be changed into another prime (252777592489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126388751244 + 126388751245.

It is an arithmetic number, because the mean of its divisors is an integer number (126388751245).

Almost surely, 2^252777502489 is an apocalyptic number.

It is an amenable number.

252777502489 is a deficient number, since it is larger than the sum of its proper divisors (1).

252777502489 is an equidigital number, since it uses as much as digits as its factorization.

252777502489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19756800, while the sum is 58.

The spelling of 252777502489 in words is "two hundred fifty-two billion, seven hundred seventy-seven million, five hundred two thousand, four hundred eighty-nine".