252525772861 has 2 divisors, whose sum is σ = 252525772862. Its totient is φ = 252525772860.

The previous prime is 252525772777. The next prime is 252525772879. The reversal of 252525772861 is 168277525252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196785396025 + 55740376836 = 443605^2 + 236094^2 .

It is a cyclic number.

It is not a de Polignac number, because 252525772861 - 2¹¹ = 252525770813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252525772799 and 252525772808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252525772061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126262886430 + 126262886431.

It is an arithmetic number, because the mean of its divisors is an integer number (126262886431).

Almost surely, 2^252525772861 is an apocalyptic number.

It is an amenable number.

252525772861 is a deficient number, since it is larger than the sum of its proper divisors (1).

252525772861 is an equidigital number, since it uses as much as digits as its factorization.

252525772861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704000, while the sum is 52.

The spelling of 252525772861 in words is "two hundred fifty-two billion, five hundred twenty-five million, seven hundred seventy-two thousand, eight hundred sixty-one".