25203645241 has 2 divisors, whose sum is σ = 25203645242. Its totient is φ = 25203645240.

The previous prime is 25203645209. The next prime is 25203645263. The reversal of 25203645241 is 14254630252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21954645241 + 3249000000 = 148171^2 + 57000^2 .

It is a cyclic number.

It is not a de Polignac number, because 25203645241 - 2⁵ = 25203645209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25203645197 and 25203645206.

It is not a weakly prime, because it can be changed into another prime (25203649241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12601822620 + 12601822621.

It is an arithmetic number, because the mean of its divisors is an integer number (12601822621).

Almost surely, 2^25203645241 is an apocalyptic number.

It is an amenable number.

25203645241 is a deficient number, since it is larger than the sum of its proper divisors (1).

25203645241 is an equidigital number, since it uses as much as digits as its factorization.

25203645241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 25203645241 in words is "twenty-five billion, two hundred three million, six hundred forty-five thousand, two hundred forty-one".