25112050749109 has 2 divisors, whose sum is σ = 25112050749110. Its totient is φ = 25112050749108.

The previous prime is 25112050749053. The next prime is 25112050749151. The reversal of 25112050749109 is 90194705021152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21174814592100 + 3937236157009 = 4601610^2 + 1984247^2 .

It is a cyclic number.

It is not a de Polignac number, because 25112050749109 - 2¹⁷ = 25112050618037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25112050749809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12556025374554 + 12556025374555.

It is an arithmetic number, because the mean of its divisors is an integer number (12556025374555).

Almost surely, 2^{25112050749109} is an apocalyptic number.

It is an amenable number.

25112050749109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25112050749109 is an equidigital number, since it uses as much as digits as its factorization.

25112050749109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 25112050749109 in words is "twenty-five trillion, one hundred twelve billion, fifty million, seven hundred forty-nine thousand, one hundred nine".