25065024172109 has 2 divisors, whose sum is σ = 25065024172110. Its totient is φ = 25065024172108.

The previous prime is 25065024172103. The next prime is 25065024172147. The reversal of 25065024172109 is 90127142056052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14824448164009 + 10240576008100 = 3850253^2 + 3200090^2 .

It is a cyclic number.

It is not a de Polignac number, because 25065024172109 - 2⁴ = 25065024172093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25065024172109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25065024172103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12532512086054 + 12532512086055.

It is an arithmetic number, because the mean of its divisors is an integer number (12532512086055).

Almost surely, 2^{25065024172109} is an apocalyptic number.

It is an amenable number.

25065024172109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25065024172109 is an equidigital number, since it uses as much as digits as its factorization.

25065024172109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 25065024172109 in words is "twenty-five trillion, sixty-five billion, twenty-four million, one hundred seventy-two thousand, one hundred nine".