252527777549 has 2 divisors, whose sum is σ = 252527777550. Its totient is φ = 252527777548.

The previous prime is 252527777543. The next prime is 252527777573. The reversal of 252527777549 is 945777725252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134358902500 + 118168875049 = 366550^2 + 343757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252527777549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252527777491 and 252527777500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252527777543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126263888774 + 126263888775.

It is an arithmetic number, because the mean of its divisors is an integer number (126263888775).

Almost surely, 2^252527777549 is an apocalyptic number.

It is an amenable number.

252527777549 is a deficient number, since it is larger than the sum of its proper divisors (1).

252527777549 is an equidigital number, since it uses as much as digits as its factorization.

252527777549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86436000, while the sum is 62.

The spelling of 252527777549 in words is "two hundred fifty-two billion, five hundred twenty-seven million, seven hundred seventy-seven thousand, five hundred forty-nine".