25050305487521 has 2 divisors, whose sum is σ = 25050305487522. Its totient is φ = 25050305487520.

The previous prime is 25050305487463. The next prime is 25050305487551. The reversal of 25050305487521 is 12578450305052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13890797345296 + 11159508142225 = 3727036^2 + 3340585^2 .

It is a cyclic number.

It is not a de Polignac number, because 25050305487521 - 2⁶ = 25050305487457 is a prime.

It is not a weakly prime, because it can be changed into another prime (25050305487551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12525152743760 + 12525152743761.

It is an arithmetic number, because the mean of its divisors is an integer number (12525152743761).

Almost surely, 2^{25050305487521} is an apocalyptic number.

It is an amenable number.

25050305487521 is a deficient number, since it is larger than the sum of its proper divisors (1).

25050305487521 is an equidigital number, since it uses as much as digits as its factorization.

25050305487521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680000, while the sum is 47.

The spelling of 25050305487521 in words is "twenty-five trillion, fifty billion, three hundred five million, four hundred eighty-seven thousand, five hundred twenty-one".