25651330563203 has 2 divisors, whose sum is σ = 25651330563204. Its totient is φ = 25651330563202.

The previous prime is 25651330563167. The next prime is 25651330563253. The reversal of 25651330563203 is 30236503315652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25651330563203 is a prime.

It is not a weakly prime, because it can be changed into another prime (25651330563253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825665281601 + 12825665281602.

It is an arithmetic number, because the mean of its divisors is an integer number (12825665281602).

Almost surely, 2^{25651330563203} is an apocalyptic number.

25651330563203 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651330563203 is an equidigital number, since it uses as much as digits as its factorization.

25651330563203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 44.

Adding to 25651330563203 its reverse (30236503315652), we get a palindrome (55887833878855).

The spelling of 25651330563203 in words is "twenty-five trillion, six hundred fifty-one billion, three hundred thirty million, five hundred sixty-three thousand, two hundred three".