25000075000009 has 2 divisors, whose sum is σ = 25000075000010. Its totient is φ = 25000075000008.

The previous prime is 25000074999973. The next prime is 25000075000031. The reversal of 25000075000009 is 90000057000052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18160620894784 + 6839454105225 = 4261528^2 + 2615235^2 .

It is a cyclic number.

It is not a de Polignac number, because 25000075000009 - 2⁷ = 25000074999881 is a prime.

It is not a weakly prime, because it can be changed into another prime (25000075300009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500037500004 + 12500037500005.

It is an arithmetic number, because the mean of its divisors is an integer number (12500037500005).

Almost surely, 2^{25000075000009} is an apocalyptic number.

It is an amenable number.

25000075000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

25000075000009 is an equidigital number, since it uses as much as digits as its factorization.

25000075000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 28.

The spelling of 25000075000009 in words is "twenty-five trillion, seventy-five million, nine", and thus it is an aban number and an uban number.