25027500028009 has 2 divisors, whose sum is σ = 25027500028010. Its totient is φ = 25027500028008.

The previous prime is 25027500027977. The next prime is 25027500028061. The reversal of 25027500028009 is 90082000572052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15370539798784 + 9656960229225 = 3920528^2 + 3107565^2 .

It is a cyclic number.

It is not a de Polignac number, because 25027500028009 - 2⁵ = 25027500027977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25027500028709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513750014004 + 12513750014005.

It is an arithmetic number, because the mean of its divisors is an integer number (12513750014005).

Almost surely, 2^{25027500028009} is an apocalyptic number.

It is an amenable number.

25027500028009 is a deficient number, since it is larger than the sum of its proper divisors (1).

25027500028009 is an equidigital number, since it uses as much as digits as its factorization.

25027500028009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 25027500028009 in words is "twenty-five trillion, twenty-seven billion, five hundred million, twenty-eight thousand, nine".