25013455306109 has 2 divisors, whose sum is σ = 25013455306110. Its totient is φ = 25013455306108.

The previous prime is 25013455306087. The next prime is 25013455306121. The reversal of 25013455306109 is 90160355431052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15171920863225 + 9841534442884 = 3895115^2 + 3137122^2 .

It is a cyclic number.

It is not a de Polignac number, because 25013455306109 - 2²⁸ = 25013186870653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25013455306109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25013455306159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506727653054 + 12506727653055.

It is an arithmetic number, because the mean of its divisors is an integer number (12506727653055).

Almost surely, 2^{25013455306109} is an apocalyptic number.

It is an amenable number.

25013455306109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013455306109 is an equidigital number, since it uses as much as digits as its factorization.

25013455306109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 25013455306109 in words is "twenty-five trillion, thirteen billion, four hundred fifty-five million, three hundred six thousand, one hundred nine".