25073420171 has 2 divisors, whose sum is σ = 25073420172. Its totient is φ = 25073420170.

The previous prime is 25073420161. The next prime is 25073420191. The reversal of 25073420171 is 17102437052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25073420171 - 2⁶ = 25073420107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25073420161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12536710085 + 12536710086.

It is an arithmetic number, because the mean of its divisors is an integer number (12536710086).

Almost surely, 2^25073420171 is an apocalyptic number.

25073420171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25073420171 is an equidigital number, since it uses as much as digits as its factorization.

25073420171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 25073420171 in words is "twenty-five billion, seventy-three million, four hundred twenty thousand, one hundred seventy-one".