25243112057 has 2 divisors, whose sum is σ = 25243112058. Its totient is φ = 25243112056.

The previous prime is 25243112039. The next prime is 25243112087. The reversal of 25243112057 is 75021134252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18621058681 + 6622053376 = 136459^2 + 81376^2 .

It is a cyclic number.

It is not a de Polignac number, because 25243112057 - 2¹⁸ = 25242849913 is a prime.

It is not a weakly prime, because it can be changed into another prime (25243112087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621556028 + 12621556029.

It is an arithmetic number, because the mean of its divisors is an integer number (12621556029).

Almost surely, 2^25243112057 is an apocalyptic number.

It is an amenable number.

25243112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

25243112057 is an equidigital number, since it uses as much as digits as its factorization.

25243112057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 25243112057 in words is "twenty-five billion, two hundred forty-three million, one hundred twelve thousand, fifty-seven".