25030530278309 has 2 divisors, whose sum is σ = 25030530278310. Its totient is φ = 25030530278308.

The previous prime is 25030530278297. The next prime is 25030530278333. The reversal of 25030530278309 is 90387203503052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14541333156100 + 10489197122209 = 3813310^2 + 3238703^2 .

It is a cyclic number.

It is not a de Polignac number, because 25030530278309 - 2¹² = 25030530274213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25030530278339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515265139154 + 12515265139155.

It is an arithmetic number, because the mean of its divisors is an integer number (12515265139155).

Almost surely, 2^{25030530278309} is an apocalyptic number.

It is an amenable number.

25030530278309 is a deficient number, since it is larger than the sum of its proper divisors (1).

25030530278309 is an equidigital number, since it uses as much as digits as its factorization.

25030530278309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 25030530278309 in words is "twenty-five trillion, thirty billion, five hundred thirty million, two hundred seventy-eight thousand, three hundred nine".