25758026249 has 2 divisors, whose sum is σ = 25758026250. Its totient is φ = 25758026248.

The previous prime is 25758026243. The next prime is 25758026279. The reversal of 25758026249 is 94262085752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17830795024 + 7927231225 = 133532^2 + 89035^2 .

It is a cyclic number.

It is not a de Polignac number, because 25758026249 - 2⁴ = 25758026233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25758026197 and 25758026206.

It is not a weakly prime, because it can be changed into another prime (25758026243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12879013124 + 12879013125.

It is an arithmetic number, because the mean of its divisors is an integer number (12879013125).

Almost surely, 2^25758026249 is an apocalyptic number.

It is an amenable number.

25758026249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25758026249 is an equidigital number, since it uses as much as digits as its factorization.

25758026249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 25758026249 in words is "twenty-five billion, seven hundred fifty-eight million, twenty-six thousand, two hundred forty-nine".